New research indicates that parents’ lifestyle choices can impact their offspring’s health by causing external modifications to their DNA, which alters the expression of their genes. This process is known as epigenetics and is influenced by factors such as maternal exposures and lifestyle habits during pregnancy. The study also highlights how genetic and epigenetic (DNA methylation) marks created in response to environmental stress events can affect the expression patterns of genes in a particular region.
Paternal and maternal lifestyles, including physical activity, nutrition, and exposure to hazardous substances, can alter the epigenome and affect the health of their children. Additionally, lifestyle factors and environmental exposures have been found to change sperm DNA methylation patterns, which subsequently affect DNA.
The new science of “epigenetics” explores how nature and nurture combine to cause behavior, traits, and illnesses that genes alone cannot explain. Studies show that a parent’s poor diet can affect the genes of generations to come, setting up children and grandchildren for obesity and other health issues.
Epigenetic-heritable changes, which do not involve alterations in the DNA, are another non-DNA-based mechanism that passes on these changes to the offspring. Studies show that a parent’s poor diet could affect the genes of generations to come, setting them up for obesity and other health issues.
In conclusion, parent lifestyle choices can cause external modifications to their offspring’s DNA, altering the expression of their genes through epigenetic mechanisms. Environmental factors such as smoking, diet, and stress can leave their mark on the genes of children and their offspring.
📹 How CRISPR Changes Human DNA Forever
A Chinese scientist claims to have created the world’s first genetically-engineered babies. He used CRISPR, a revolutionary …
Does lifestyle affect DNA?
Epigenetic changes, which occur when lifestyle or environmental factors cause a gene to turn on or off, can significantly impact the functioning of the body’s genetic material. For example, in cancer, these changes could activate a gene that allows abnormal cells to grow or suppress their growth. Each gene has hundreds or thousands of switches, making it difficult for scientists to determine the exact cause of the epigenetic change and its impact on a specific disease. However, experts believe that lifestyle factors like poor diet, smoking, and lack of exercise are driving gene expression into negative territory.
Can your environment affect your DNA?
Environmental chemicals can alter biological processes that impact epigenetic mechanisms, such as DNA methylation, histone codes, and miRNA expression. These changes can affect chromatin organization, gene expression, and disease risk. Molecular epidemiology has been used to assess and prevent cancer, while health risk analyses are required for genotoxic carcinogens and promoting agents. The next innovation cycle in toxicogenomics is focusing on environmental epigenetics, which could lead to new insights into the role of environmental chemicals in cancer risk assessment and prevention.
Can behavior change DNA?
Epigenetics is the study of how behaviors and environment can influence the functioning of genes. It focuses on how these changes affect the way genes work, rather than altering the sequence of DNA bases. Gene expression is the process of making proteins using the instructions from genes. A person’s DNA contains many genes, each with instructions for protein production. Additionally, there are non-gene sections of DNA that are crucial for ensuring proper gene function.
These sections provide directions for protein production in the body, timing, and quantity. Epigenetic changes affect gene expression, turning genes on and off, causing them to produce proteins in cells and tissues when they normally would, or not produce proteins where and when they normally would. This can also result in more or less protein production than they normally would.
What affects your DNA?
Environmental exposure to chemicals, ultraviolet radiation, and other factors can cause DNA changes, known as mutagens. These agents alter the molecular structure of nucleotides, leading to substitutions, insertions, and deletions in the DNA sequence. Mutations, which are a source of genetic diversity in populations, can have varying individual effects. Some mutations can be beneficial, improving an organism’s adaptability to environmental factors, while others can be harmful, increasing susceptibility to illness or disease. The ultimate effects of mutations are as varied as the types of mutations themselves.
Does lifestyle affect offspring?
Lifestyle modifications have the potential to exert a profound influence on the genetic makeup of subsequent generations. The selection of fruits or vegetables in lieu of chips can prove advantageous not only for the individual but also for future generations.
How does your diet affect your DNA?
The study in Nature Communications found that diet can significantly impact how we express the possibilities encoded in our DNA. The foods we consume can turn on or off certain genetic markers, which can play a significant role in our health outcomes. The study was conducted on fruit flies and found that extremely high-fat diets could affect the vulnerability of later generations to heart disease. This highlights the importance of considering our diet’s impact on our health.
How do lifestyle factors affect fertility?
Lifestyle factors, including diet, sleep, and lifestyle choices, significantly impact health and disease, including fertility. Obesity is linked to lower sperm count and quality in men, while underweightness is linked to ovarian dysfunction and infertility in women. Physical labor and multiple medications can reduce sperm count in males, while excessive exercise can affect ovulation and fertility in women. Body-building medications or androgens can affect sperm formation, while substance use, including smoking, marijuana, and illegal drugs, can reduce fertility in both men and women.
High blood pressure can also reduce fertility. The type of underwear a man chooses is not related to his infertility. Radiation therapy and chemotherapy can cause infertility in both genders, and those undergoing these treatments may want to consider fertility preservation. Exposure to persistent organic pollutants and endocrine-disrupting chemicals (EDCs) in the environment can also affect fertility.
Does where you live affect your DNA?
Epigenetics is the study of heritable changes in gene expression that don’t involve altering the underlying DNA. Environmental factors like food, drugs, or exposure to toxins can cause epigenetic changes by altering the way molecules bind to DNA or changing the structure of proteins that DNA wraps around. These structural changes can result in slight changes in gene activity or more dramatic changes by switching genes on when they should be off or vice versa.
These changes are heritable, meaning they can be passed on from parent cell to daughter cell within the body and from parent to child. An extraordinary study of survivors of the Dutch famine during World War II showed that the effect of epigenetic changes caused by hunger didn’t show up in the survivors’ children, but did in their children’s children.
Can habits change your DNA?
Environmental and lifestyle factors can influence epigenetic mechanisms, including DNA methylation, histone modifications, and microRNA expression. Abnormal epigenetic patterns can be implicated in human diseases, as demonstrated by studies by Probst, Dunleavy, Almouzni, Santos-Reboucas, Pimentel, and Bartsch. Oxidative stress and lipid peroxidation-derived DNA-lesions are linked to inflammation-driven carcinogenesis, highlighting the importance of understanding these factors in the development of diseases.
Does DNA change during a person’s life?
Epigenetic changes, which modify DNA without altering the genetic sequence, affect how genes are turned on and off, regulating how cells use the same genetic code. Previous studies have shown that DNA methylation levels reflect a person’s age. Recent research suggests that epigenetic age might also be associated with health outcomes independent of chronological age. Dr. Steve Horvath from the University of California, Los Angeles, and his colleagues analyzed DNA in blood samples from over 13, 000 people, including non-Hispanic whites, Hispanics, and African Americans. The study, published in Aging, was funded in part by the National Institute on Aging (NIA) and the National Heart, Lung, and Blood Institute (NHLBI).
📹 What can DNA tests really tell us about our ancestry? – Prosanta Chakrabarty
Dig into the science of how ancestry DNA tests work, their accuracy, and why tracing ancestry is so complicated. — Two sisters …
I suffer from ankylosing spondylitis, lupus and hemochromatosis and I’m thankful for everything listed above as it makes me stronger, wiser, more patient and closer to God, Lord Jesus Christ. Get behind me, Satan, in the name of Jesus Christ! “For what shall it profit a man, if he shall gain the whole world, and lose his own soul?” Only God knows what you need. Don’t bow to men, but God alone. Glory be the Lamb of God who takes away the sin of this world and sets the captives free. Glory! Glory! Glory!
Cloning humans 💯 has been perfected. I remember as a child, in the 1980s, the big news was the breakthrough science of cloning “Dolly the Sheep” ! That means they had been practicing for a good 50 years before us little people was told about it… I reckon in the next decade the whole human cloning thing will be nonchalantly slipped into the science techs
And now when you have your baby put in the nursery and your baby boy comes out to be a serial killer or super crazy out of they minds and never listens to what you say as they grow up now you child is part of a secret experiment. Yes they still do that by the way. They aren’t going to tell the public either. Just like the twin experiment that was only found out cause they got caught.
3 of my blood relatives died in less than a year. 98 percent of my family is dead. I lost my father to kidney disease. My mom to Alzheimers. My uncle to a heart attack. My family has a long list of sicknesses and illnesses. One day my families medical history is going to come to take me out as well. I am so close to being the last surviving member of my family. If my parents genetically engineered me and their parents engineered them then this would not be happening to me. I was born in 1980. No such thing as genetic engineering then. Maybe it’s not that bad.
The way this article was worded was kinda concerning. A little bit of fear mongering, the mentioning of mutations like the human genome isn’t full of mutations because that’s how evolution works. With our current understanding, I’m not sure how I feel about gene editing. I would prefer that scientists in that area keep different species seperate. Use human genes to fix an issue with a human because there’s a possibility that human could have been born the ordinary way. If that gene is safe in this cat, it shouldn’t cause unintended consequences in this other cat. Atleast none that would be life destroying.
Every plus has its own minus. Soo I think even if u eliminate all those bad things, actually u will create new bad things. Take an example at.. Smart ppl. The plus side is.. they’re smart. But the minus side is.. they can’t mix out with society easily. Smart ppl sacrifices their social skills because they’re too busy with collecting knowledge.
Idc if u get pissed, but i think CRISPR should only be available to the rich. If it became a human right, we’d have an even worse overpopulation issue. Let the rich survive and then have to deal with inflation later, then the wage disparity will balance out again because the lower quartile of the rich will be considered poor, etc. That way, at some point, everyone would have been genetically modified, without population issues. Im middle class, i wouldn’t be able to access this technology either. But you can’t let your personal emotions dictate. Its whats better for society as a whole.
In this topic, I actually think that some risks are needed to be done. I believe genetic engineering should be promoted in order for the advancement of the civilization. For instance, having more resilient body or more intelligent mind would be good. I know it contradicts with morality and human rights but as I’ve said, some risks are needed to be done. Some might say that I am being hypocrite and if I were to be used as a guinea pig, I would not be saying this but I still think the same.
As long as it is cure and erase genetic disorders and illness I’m on board. However…genetically engineered soldiers would be an advantage but it will also breed a whole new war. War never stops, war never changes only the era and reasons do. You create a batch of biologically engineered soldiers and another country will do the same and even enhance the mutations. There is no end to greed or power.
It’s not that the tests don’t show you your ancestry, necessarily. Let me explain: 1) You don’t get the same trait or percentage as your sibling from each parent, grandparent, or ancestor (hence why we do not look identical) 2) Most of the tests are based on modern day comparisons (unless you’re running an ancestral database, like on Gedmatch, for example). 3) Not all of your 1% variance from other members of the modern human species is being tested. But this 1% determines what genetic-ethnicity you are. Not all of this 1% is tested equally – hence why different tests reveal different results. It’s best to take an average between them and infer. 4) Humans are essentially the product of different hominids mixing, each hominid dependant on where they come from geographically. 5) Y-DNA goes back to a long line of males unchanged from your father going straight back, as does mtDNA for the mother’s side, but only males can be tested for Y since we have that chromosome. DNA testing is complicated and nonlinear, but that doesn’t mean it’s pointless. It can reveal a lot about what you’ve inherited. Of course, just because you carry certain genes doesn’t mean you’ll express them all. It’s best to believe with a healthy amount of skepticism.
One important thing left out of this article, likely for time, is mutation of genes. Many of these markers that tests look for are the difference between a single base pair, and the supposed ancestries they give you are based on how common these varieties of markers appear in certain regions based on their databases. However, your DNA mutates a lot, changing out one base pair for another. These markers are especially prone to being mutated and passed on, due to complicated DNA repair, genomic, and evolutionary mechanisms. Just because you might have one marker that looks like one found in France, does not mean you are French at all, since it is entirely possible (and perhaps likely) that you or an ancestor experienced a mutation that gave you the French-like version of that marker.
The mere fact, that “287” people have given this amazing article a “thumbs down”, shows that a “complete lack of understanding, or an unwillingness to learn” & a sheer “delusional ignorance”, is well & truly alive in this world. If this reliable article, does not teach us all the ‘basics”, regarding “random DNA inheritance”, then i don’t know what will.
So, I am from the east coast of Canada, and all my ancestors, as far as I can tell, came from the Dorset area of England. But there is a family story that one ancestor was a sailor on the Spanish Armada who was shipwrecked in Dorset, and ended up settling there. When I did a DNA test with one of the commercial companies, it showed 15 % DNA from the Iberian peninsula. Would you consider this a confirmation of the family story ? It seems a lot of generations for the DNA to have survived, but on the other hand, I have no other explanation of where that DNA would have come from.
One slight oversight with your explanation, due to getting 1/2 DNA from each parent (+/- crossover DNA), it is entirely possible that you will receive no DNA from one of your grandparents, (i.e. father only passes down his father’s DNA/chromosomes to you, not his mother’s) hence that entire lineage leading up until you, could be classified genetically as dissimilar to you, despite the fact they were required to make you in the first place. Now yes there’s billions of base pairs so that event is unlikely, but when we each have 4 grandparents and there are 7 billion of us, so that event is actually quite likely to have occurred to one of us. And failing that, great grandparents etc, not great great + like explained in the article. In short, the DNA that comprises you may have come very little from one specific grandparent due to the way maths and 1/2s work
I recently received my DNA report, and while I find it fascinating, I’m also aware that there’s a lot to understand about the results. I noticed that it shows my ethnicity as 33% Sweden & Denmark, 29% England and Northwestern Europe,12% Germanic Europe, 10% Ireland, 8% Scotland, 4% Eastern Europe & Russia, 3% Wales, 1% Baltics. The DNA report provided information about which parent I inherited specific ethnicities from, my British (England & Northwestern Europe, Ireland, Scotland, Wales) ethnicities were all attributed to my mother, which made sense and was consistent with the genealogical information we already knew. The Swedish & Danish, Eastern European & Russian, and Baltic ethnicities were all attributed to my father’s side. Given that my father, his parents and paternal grandparents are all German, I’m particularly interested in understanding how recent my ancestors would have had to be in Sweden or Denmark to contribute to my Scandinavian DNA percentage. Additionally, could you provide insights into the historical and demographic factors that might explain these results?My father left Germany when he was 27 years old and he passed several years ago, we spoke very little about his family and life before. All I know is that my close German relatives are from Hamburg, Germany, in the northern part of the country, is it possible that there could be some overlap or genetic similarities with populations from neighbouring regions, that may have been mistakenly attributed to Sweden & Denmark?
The problem with comparing DNA to “people currently living in France” is that there isn’t a control for racial heredity. What if a man whose all four grandparents, and eight great grandparents were from Sinagal is told that his ancestry is mostly from France? What is an American whose ancestors were Irish, and had been living there for a thousand years, were told that his ancestry matches people mainly living in Massachusetts; is he to suppose he’s Native American and has a heredetary tribal affiliation?
We learned about recombination, etc. by studying Gregor Mendel’s work on the fruit fly. Back when I thought I wanted to be a genetic engineer. DNA tells us a lot. I watch these articles all the time, and this is a great place for education. In fact, it inspired me to create my own. If you use technology, but don’t always understand it, we have simple and easy explanations for you. Head over and check it out, your support is always appreciated.
i’m not sure how humans can be a separate species from neanderthal if they can produce fertile offspring, that makes them the same species, but differing subspecies. probably I don’t know what I’m talking about, but it seems that donkeys and horses are of the same genus, because they can produce sterile offspring: mule.
I did ancestrys and still after this am curious to see what 23&me says about my ancestry/DNA . One of the funny things I saw when I first received my results was the less than 1% Finnish … My paternal relatives came from Finland to Germany and part of my last name was taken from the Finnish language. But i also know before my g (g?) Gfather came to America and before his family was in Finland they were in Germany before that and that could be the reason for my lack of “Finnish DNA” (not the entire reason of course though but it’s interesting).
Still my test was able to identify a lot of origins I can confirm through my family tree, as well as oral information passed down through generations. Furthermore, my ancestry test determined specific (US regions) migrations I know to be true of my ancestors. It even picked up African ancestry I’ve also confirmed through my family tree. So, I feel like mine was pretty accurate. The changes that have occurred over time involving percentages seem to just be more detailed information explaining more vague regions from earlier. I don’t believe it’s picked up every genetic region of my ancestors, but I feel like the test was pretty good.
I always thought that some of the inherited genes were sleepers. That an electron of an atom of dna activated in some desenderants and not others. Such as physical features as nose shape, or dyslexic skipping across families rather than parent to child or penchant for colour or perfume. Something that one ancestor was strongly passionate about that was not told in stories handed down the family line. A piece of memory or an inherited fault in mind or body resulting in missing or added during conception from each 23 pairs from parents. There is still a lot to discover.
Wow. My mother told me that we have an Arab lineage in our blood. That is why I am hopeful to see a relative from a different part of the world lol. However, after learning this, I am convinced that it would not be possible. It’s not a big deal though. Thank you for this Ted-Ed, I have learned a lot.
Yes, you cannot prove race or ethnicity but you can prove that certain groups of people who are related are more prone to genetic disease than others due to inbreeding and so forth. Another theory is that some genes don’t go well with other genes. How do we prove this? by yourselves looking at physical appearance and behavior.
I think you have it backwards. Without recombination, each chromosome would come whole from some ancestor, so even though you have over a thousand ancestors ten generations back, you could only have DNA from 46 of them (or fewer if two of your chromosomes came from the same person). It’s because of recombination that you can have DNA from most of them. Actually, if you are male, because the Y chromosome does not participate in recombination, all your DNA on that chromosome comes from your direct paternal ancestor.
This article is atrocious. The narrator jumps back and forth between a critique of ethnicity admixture results in commercial genetic tests for family history and an overview of autosomal DNA inheritance. The narrator then pushes a completely flawed assumption (through the narrator’s fixation on 10% French throughout the article) that the ethnicity admixture results are the sole “result” of a commercial genetic genealogy test. In reality, serious genetic genealogists focus heavily on the amount of DNA shared among a tester and the tester’s close matches in the database and then use information from DNA matching in combination with other records to explore genealogical research. Case-in-point, genetic genealogists used the evidence from autosomal DNA matching in conjunction with paper records to crack the Golden State Killer cold case. It literally had NOTHING to do with ethnicity admixture results. TED-Ed makes some excellent articles, but this article is simply not up to its standards. And, you don’t even have to take my word for it. Here is a short but detailed article from one of the world’s leading scientific journals (Science) on how genetic genealogy was used to crack the Golden State Killer case. The case (which had gone completely unsolved going back to the 1970-80s) could not have been solved without genetic genealogy: sciencemag.org/news/2018/10/we-will-find-you-dna-search-used-nab-golden-state-killer-can-home-about-60-white
Thank you for the article. I’m Russian by passport but by dna test i have only 3% of European Russian “blood” and other is Finnish, Swedish, Dutch etc. The problem is my grandmother got her test results by Russian company and it shown RussianUkrainianBelurussian blood only. Don’t know about other ancestors though
I always thought that the base sample was taken from those that could prove their ancestry back through multiple generations. For example the French base sample would be those that had proof of their ancestry back many generations. For example I can show where my ancestors were born going back some 7 generations through Church records.
My DNA test results were pretty accurate. Just knowing my family’s history and where they’ve always said our ancestors came from, is pretty much what showed up in my results. Now that I think about it, it was probably a waste of time and money for me to get tested lol. But it’s still fun and interesting to do it anyway.
i took a test a few years back in USA — it said I am 92% South Asian-Indian, then I took another in UK, it said that I am 52% India-SOuth (Dravidian), 40% South Asia-India………………me like wat the F** India is India right. But I am Konkani (GOa in India) Buy the way remaining 8% was Native American/East Asian and some traces- europe south-west
Well, all it really takes is common sense. How are the DNA testing companies going to match your DNA to all of these foreign countries without you having a relative in those countries to match your DNA with? The only way a DNA test can work is if you are trying match DNA with your parents or children not ethnicity.
Okay that makes sense why my aunt’s DNA results are more heighten about her paternal grandma’s side and my grandma’s Fsther’sside. Yet less heighten in my grandma’s mkther’s side and possibly also my biological grandpa’s father sise. Whom both of did the test inspire orf him. My maternal grandpa not knowing his biological father. My grandpa has been dead for 13 years and would be 90 in 2024. Still not a lot of info from the Grest Depression era besides his biological mother and his step-father(my step-Grest grandfather). My maternal grandma is also doing the test for me and probably my mum will do one too.
I don’t think it’s correct what this article claims in that I don’t think that without recombination you would receive 25% of DNA (tested DNA that is) from each grandparent. If this are the case and each of genres you received from each parent was 100% from one of their parents, as they have them, but a mixture then without recombination there is even more chance of some children getting even less from one grandparent as it’s a random all or nothing chance as to which chromosomes you inherit from each grandparent and not a mix, in which case you could potentially get nothing from a grandparent. It’s a good thing it’s not like this as those of us using the DNA tests to build a family tree as far back as possible (the Ethnicity Estimate is just a gimmick, the matches are the true way to find your ethnicity) would find that on our own and without multiple people testing it’d be even harder to build your tree (and you’d probably have a lot less matches or at least smaller amounts of DNA from the majority of ancestors a few generations back).
um that is not what i understood on DNA. the genetic markers that laboratory work finds, is affected by many factors. you glossed over some of it. one fact is right, laboratory company is stuck with small marker segments. THIS is due to “constraints” unrelated to DNA itself (aka database confidentiality, file storage, processing hundreds DNA in a day, numbers of computers, marker criteria swapping, assumptions, etc.) YOU should not consider DNA ancestry 100% correct until advances is made, resolving not DNA related constraints.
Meh. Yes, recombination. As you say, that removes the guarantee of equal representation of my ancestors in my DNA. Then you play the game of, imagine this would not happen – and come up with fractions that imply equal representation. That is not true either. As 50% of my chromosomes (the things consisting of DNA) is from my father and 50% from my mother, there is no guarantee that I will pass on half of mother’s chromosomes and half of father’s. I will pass half of my 46 chromosomes – 23 chromosomes on and these 23 can be predominantly from father or predominantly from mother. With or without recombination. The only fixed fraction we can be sure of is the fraction of our mother and father – 50% each (if nothing goes wrong as in Down’s syndrome).
Me, being a Bengali dude, searching the internet for the best commercial DNA tests for Bengalis, South Asians or Indians, and here is a Bengali dude of similar ancestry raising doubts in me about it, which I already had. Kind of, ironical. The following is the doubt which I had before the article and to an extent even now :- So they do the prediction of an origin based on if a percentage of other test takers in the database said they come from that particular origin. But that is not going deep into the ancestry and also it can be extremely inaccurate since the test takers in the database might have different ethnicity than the country’s people or might give inaccurate information especially of a community who themselves don’t know their origin beyond few generations. I know the chances of that get lesser if more and more test takers come up but even then it might be a possibility that a lot of them wouldn’t know who their ancestors beyond 4 generations. Do they match the DNA results with ancient remains of tribal people or people beyond few generations at least to the previous millenium ? I have seen many such articles but nobody has touched on these points in this way much. Me, as a Bengali guy, wants to know how much percentage of my ancestry is from Indo-European, Iranian, Indian tribal, Mongolian, East African, West African, Middle Easterns, Cental Asian or Eastern European (that might be predicted by Indo-European percentages), and of course lastly, other Indian communities assuming a tiny bit of difference between Bengalis and non Bengalis in the Indian subcontinent especially in mainland India.
Ethnicity and Nationalities ect are probably at best 50% accurate.. but haplogroup are accurate..also this article is not correct.. There are complete native American dna sequences…the clovis boy of Montana is 10,000 to 12.000 years old or ..the florida windover natives americans are around 8,000 years old.
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Your Y chromosome and mitochondria DNA come only respected from your Dad and Mom. Sometimes you can see an ancestor there you cannot see otherwise. I am almost completely Northern European. And my male ancestors can be traced back to the British Isles. Well before Columbus sailed. Yet my Y chromosome is from Northern Africa through the Middle East.
Ancestry dna helped me reaffirm that my known father is actually my father he left us because he believed we werent his actual children and that my mother was being unfaithful ( she was ) but turns out he is my father for the fact i found many cousins with his last name and his parents surnames so i proved he was my father not like thats gonna make him come back and bring us the milk he promised us 24 years ago lol
Mrs Richards: ” I paid for a room with a view!” Basil: (pointing to the lovely view) “That is Torquay, Madam.” Mrs Richards: “It’s not good enough!” Basil: “May I ask what you were expecting to see out of a Torquay hotel bedroom window? Sydney Opera House, perhaps? the Hanging Gardens of Babylon? Herds of wildebeest sweeping majestically past?…” Mrs Richards: “Don’t be silly! I expect to be able to see the sea!” Basil: “You can see the sea, it’s over there between the land and the sky.” Mrs Richards: “I’m not satisfied. But I shall stay. But I expect a reduction.” Basil: “Why?! Because Krakatoa’s not erupting at the moment?
“Recombination makes the part you inheritet from each of your distant relatives higher variance” is complete wrong!! It is the exact opporsite. Due to the law of large numbers the exact opporsite is happening. To see this take an ancestor 6 generations ago, you have 64 ansestors on that stage. Without recombination that ancestor would either be responsiable for 0,1,2,3… of a chromeson pair so a 0/46, 1/46. So can’t be responsble for a 1/64 part. With recombination your genome whould consider of lots and lots of invidual parts from different parents making it much more likely that you acturally have around of one 1/64 part of that ancestors gene.
It´s really a very complicated technology to trace DNA to know your ancestors and origins… I made an exhaustive study of companies, and I believe that the most complete, accurate and reliable in terms of origins is the company 24Genetics. There are other ancestry tests on the market, but 24Genetics is the only one capable of showing over 1500 geographic areas—more than twice as many as most of the existing tests on the market. However, this company does not include family matching! They say they are working on it… it is a weakness that other companies such as FTDNA or MyHeritage have.
I’m Part German, English on my dad’s side and I’m part Scottish, Irish, and English, and German on my mom’s side although the German on my mom’s side is a secret ( don’t worry nothing scandouls just protecting thier privacy that’s all. Please respect this! I’m also part Cherroke witch is noticeable by cheekbones but what specific tribe of Cherroke, sadly I’ll never know. Probably because they all passed while walking in the heartbreaking “Trail of Tears” TedEd, please do a article if you can of this infamous trail, I would like everyone to know what exactly happened and maybe it can answer some questions about my tribe. Thank you. P.s. from I do know, you will probably have to get permission before talking about it and it is not an easy thing to talk about. And I would like someone who’s relative either lived or perished in the walk to animate and tell the story in the article.
But REARRANGEMENT is important cause it makes evolution to sustain in the environment and also to resist against certain bacteria and viruses cause species should be survived. Regeneration is the one thing that is making scientists to find vaccines because, regeneration makes them more stronger…..
I have a question, if DNA have the ability to expression, keep and transfer and expression of the genetic information from cell to cell and from organisms to organisms, in the article 3:20 you say that we took only ¼ of our grandparents, if the dna has this ability why do we loose like a ½ of these information from the past generations? Is this cause of the different mix of parents ? In conclusion, I wanted to say that where this genetic information goes that it’s been lost maybe it is a characteristic lie color of eyes or hair, and can throug different intersections to Express again a long lost gene?
Well, 1:23 seconds in and he just confirmed what Rick Kittles said about their dna kits. It literally tells you about 0.1% of your dna and according to him that is more than what you knew beforehand. Don’t quote me on that. I will go back and rewatch the article because I don’t want to put words in his mouth.
Ok so its been brought up by family members in a hush hush way that I was never intended to hear, that my dad is not biologically my father. I look zero like anyone on his side of the family. Plus his blood type is AB+ My mom’s is O- and both my sisters are A- I’m A+ yes I know it’s possible but unlikely. So my question is, if I got one of these tests and covertly got him one for Xmas, could I later compare the two and prove he was or wasn’t my father? Or would I also need my moms data to cross reference any variables and rule the out as not being a family trait or something like that? I need to know. He won’t do a paternity test. I had a hard childhood and to know that the problem was my not being his kid vs me just being not worthy of love or compassion, well, it could be life changing. But I don’t want to throw away a hundred bucks if it wouldn’t do any good anyway. Can anyone advise me on this?
I don’t get the whole obsession of using DNAs to find out ancestries. Something about obsessing who we were seems at worse returning to the weird traditional believes of forcing family ties and the old systems and at best at odds of the modern thinking of allowing mixing and release from bounds. It seems more interesting to analyze how much of our DNAs depict who we are personal wise and continue the question of “Can we learn personality and traits from DNAs”