Has there been a study on Native American dna?

@zekedarwinscience

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Why it worked

The video addresses a specific, intriguing question about ancient DNA and Native American origins, tapping into popular interest in human evolution and ancestry. It breaks down complex scientific findings into digestible information, using clear visuals and a conversational tone to engage viewers.

Summary

This video explores ancient human DNA and its connection to Native American populations. It discusses evidence of interbreeding with Neanderthals and Denisovans, highlighting specific genes that may have provided an adaptive advantage in colder climates and influenced facial features. The video also touches on a controversial study suggesting a genetic link between Indigenous South Americans and Australasians, clarifying that it points to shared ancestry from deeper in the past rather than direct migration.

Structure

1Introduction to ancient DNA and Native American origins
2Discussion of Neanderthal and Denisovan interbreeding
3Analysis of genes influencing facial traits and adaptation
4Exploration of a controversial study on Indigenous Australian genes
5Concluding thoughts on early human migration and ancestry

On-screen text

Reply to Sick Upstairs's comment Has there been a study on Native American dna? Their ancestors came from that area originally, do they have any Denisovan dna? HAS THERE BEEN NATIVE AMERICAN DNA NATIVE AMERICAN DNA THEIR ANCESTORS CAME FROM THAT AREA DO THEY HAVE ANY DENISOVAN DNA LET'S TALK ABOUT NATIVE AMERICAN DNA AND ANCIENT HUMANS IN THIS VIDEO I WANNA BREAK DIFFERENT GENES THAT THEY GOT FROM ANCIENT HUMAN SPECIES AND ALSO JUST THE HISTORY OF THE HISTORY OF SAPIENS IN THE AMERICAS BECAUSE AS YOU CAN SEE THIS IS A VERY VERY CONTROVERSIAL SUBJECT AND THAT CONTROVERSY HEATING UP SINCE NOW THIS WAS A PAPER PUBLISHED IN APRIL WAS PURELY ABOUT THE GENETICS OF A POPULATION THAT HAD PREVIOUSLY BEEN VERY UNDERSTUDIED BASED ON THE DNA THE AMERICAN CONTINENT BEGAN AT LEAST 15,000 YEARS AGO HOWEVER, THE ANCESTRY OF INDIGENOUS AMERICAN POPULATIONS TRACES BACK FURTHER IN TIME BEGINNING AROUND 25,000 YEARS AGO ON AND AROUND THE BERINGIAN LAND BRIDGE. SO ANY HYBRIDIZATION THAT OCCURRED WITH THESE NOW EXTINCT THAT OCCURRED DEEPER BEFORE THAT NATIVE AMERICAN POPULATION HAD BECAME ISOLATED THIS STUDY WAS PUBLISHED IN 2021 AND IT WAS THAT FOUND EVIDENCE OF A GENE FROM A DIFFERENT HUMAN SPECIES THE DEVELOPMENT OF THE FACE AND IT WAS HIGHEST FREQUENCY IN POPULATIONS THAT WERE IN LATIN AMERICA THIS TRAIT CAME FROM THE DENISOVANS THEY CAN TELL IT SEEMS TO IMPACT THE LIP THICKNESS THAT SAME TEAM PUBLISHED ANOTHER PAPER THAT FOUND EVIDENCE OF A NEANDERTHAL IN EAST ASIAN POPULATIONS AND NATIVE AMERICAN POPULATIONS THAT SEEMED TO IMPACT THE HEIGHT OF THE NOSE THIS TRAIT WAS THEY THINK IT A BENEFIT IN COLDER REGIONS SO PERHAPS AS THAT ANCESTRAL POPULATION WAS ON THE MAMMOTH STEPPE YEARS EVOLVING IN ISOLATION THIS NOSE TRAIT BECAME MORE COMMON AND THEN MORE RECENTLY ANOTHER GENE VARIANT HAS BEEN IDENTIFIED IN OF A MYSTERY THEY DON'T KNOW THEY THINK IT PROBABLY DOES SOMETHING FOR THE IMMUNE JUST BECAUSE THE EVIDENCE SUGGESTS IT WAS SELECTED SO STRONGLY FOR IN THE ANCESTORS OF NATIVE AMERICANS SAID THEY DON'T DOES THEY WANT TO THEY HOPE THAT PAST STUDY KIND OF INSPIRES FUTURE WORK SOMETHING INTERESTING HERE IS THAT WHEN PAPER THEY DESCRIBE THIS GENE AS LIKE BEING OREOD IN WITH OTHER DNA IT IS SURROUNDED BY NEANDERTHAL DNA SO THEY THINK IT ENTERED THE SAPIEN'S GENE POOL THROUGH HYBRIDIZATION WITH NEANDERTHALS ORIGINATED WITH DENISOVANS DENISOVANS TO NEANDERTHALS FROM NEANDERTHALS TO SAPIENS ONE OTHER THING 1st AMERICANS HAD INDIGENOUS AUSTRALIAN GENES Indigenous South Americans share DNA with Indigenous people in Oceana. BY LAURA GEGGEL PUBLISHED APRIL 2, 2021 IN NEWS FIRST AMERICANS HAD INDIGENOUS AUSTRALIAN GENES THIS IS THE HEADLINE OF AN ACTUAL LIVE SCIENCE IT IS VERY MISLEADING IT HAS CAUSED A LOT OF CONFUSION WHAT THE PAPER A DEEP GENETIC AFFINITY BETWEEN COASTAL PACIFIC AND AMAZONIAN EVIDENCED BY AUSTRALASIAN ANCESTRY THAT DOESN'T SUGGEST PEOPLE CAME FROM AUSTRALIA TO SOUTH AMERICA IT'S TALKING ABOUT DEEPER IN THE PAST A POPULATION THAT WOULD HAVE SHARED SOME ANCESTRY WITH GROUPS THAT CONTINUED MOVING THIS AND GROUPS THAT CONTINUED MOVING THIS IF YOU STUCK AROUND THIS LONG FOLLOW I'M GONNA THIS STUDY IN A VIDEO TO REALLY KIND OF SET THE AND THIS QUESTION FROM A COMMENTER THIS MORNING IT WAS THE SET THE SCENE FOR THIS VIDEO BECAUSE NOW WE'LL CLOVIS PEOPLE STARTING TO THINK THEY FIT INTO THIS ENTIRE STORY

Original caption

Replying to @Sick Upstairs What ancient dna can tell us about the first people that moved into the Americas and their prior experiences with other human species like the Neanderthals and denisovans | A human evolution deep dive #evolution #indigenous #learning #History #genetics

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Transcript

Has there been a study on Native American DNA? Their ancestors came from that area originally, do they have any Denisovan DNA? Let's talk about Native American DNA and ancient humans in this video. I wanna break down a few different genes that they got from ancient human species and also just the history of the history of sapiens in the Americas. Because as you can see, this is a very, very controversial subject. And that controversy has been heating up since. Now, this was a paper published in April. It was purely about the genetics of a population that had previously been very understudied. Based on the DNA, the American continent began at least 15,000 years ago. However, the ancestry of Indigenous American populations traces back further in time, beginning around 25,000 years ago on and around the Beringian Land Bridge. So any hybridization that occurred with these now extinct, that occurred deeper before that Native American population had became isolated. This study was published in 2021, and it was the first study that found evidence of a gene from a different human species, the development of the face. And it was highest frequency in populations that were in Latin America. This trait came from the Denisovans. They can tell it seems to impact the lip thickness. That same team published another paper that found evidence of a Neanderthal in East Asian populations and Native American populations that seemed to impact the height of the nose. This trait was they think it a benefit in colder regions. So perhaps as that ancestral population was on the mammoth steppe for thousands of years, evolving in isolation, this nose trait became more common. And then more recently, another gene variant has been identified in of a mystery. They don't know what it does. They think it probably does something for the immune system, just because the evidence suggests it was selected so strongly for in the ancestors of Native Americans. Said they don't does. They want to, they hope that past study kind of inspires future work. Something interesting here is that when they published this paper, they describe this gene as like being ored in with other DNA. It is surrounded by Neanderthal DNA. So they think it entered the sapien's gene pool through hybridization with Neanderthals, even though it originated with Denisovans. It went from Denisovans to Neanderthals, from Neanderthals to sapiens. One other thing, first Americans had Indigenous Australian genes. This is the headline of an actual Live Science article. It is very misleading. It has caused a lot of confusion. What the paper actually found was a deep genetic affinity between coastal Pacific and Amazonian natives evidenced by Australasian ancestry. That doesn't suggest people came from Australia to South America. It's talking about deeper in the past, a population that would have shared some ancestry with groups that continued moving this way, and groups that continued moving this way. If you stuck around this long, follow. I'm gonna talk about this study in a video to really kind of set the scene. And this question from a commenter this morning, it was the perfect way to set the scene for this video. Because now we'll talk about the Clovis people, and I'm starting to think they fit into this entire story.