How Neanderthals Ended Up With Human Chromosomes

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Published 2020-10-02
This week we learned that the Neanderthal/Denisovan/Human family tree is pretty complicated, thanks to a close look into some Neanderthals' Y chromosomes.

Hosted by: Hank Green

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Sources:
science.sciencemag.org/content/369/6511/1653
science.sciencemag.org/content/369/6511/1565
www.inverse.com/science/neanderthal-denisovan-y-ch…
www.the-scientist.com/news-opinion/y-chromosome-fr…
www.cell.com/cell/pdf/S0092-8674(19)30218-1.pdf

Image Sources
commons.wikimedia.org/wiki/File:Denisova_Molar.jpg
commons.wikimedia.org/wiki/File:Homo_neanderthalen…
commons.wikimedia.org/wiki/File:Comparison_of_face…
commons.wikimedia.org/wiki/File:%D0%98%D0%B7%D0%B2…
www.istockphoto.com/photo/primitive-people-gm52169…
www.storyblocks.com/video/stock/ice-age-man-in-his…
www.storyblocks.com/video/stock/damage-to-mitochon…

All Comments (21)
  • @HidaAtarasi
    This reminds me of an experiment I had conducted with guppies. Once upon a time I had a burgeoning population of feeder guppies. In a later setup, I had mixed populations of both feeder guppies and fancy guppies. The populations readily interbred, creating a hybrid with unique but consistent traits that were not found in either parent populations. The guppy populations collapsed. My hypothesis was that the hybrids were mules of a sort, but were also more desirable than the purebreds. This is a phenomenon that can be seen in other breeding hybrid breeds such as savannah cat pets trade where chromosomes in a single specimen from different species will disagree and can result in gender based sterility or where genetic viability can only be achieved by selectedly breeding with one species or another. Perhaps Neanderthal-cromagnon hybrid populations were only able to continue breeding with cromagnon males.
  • The word 'human' does not mean 'Homo sapien'. The word 'human' refers to the genus 'Homo'. Neanderthals were humans, with human DNA, as was the Homo ergaster, Homo heidelbergensis and all other hominins. Hominins are the humans. As such all species classified Homo contained human DNA. Sorry for correction. Misuse of the word 'human' specifically for Homo sapiens is a common mistake. We are just one of many kinds of humans that have existed. (I hold a recent MSc in this) Your science is good, it's just that one terminology error that troubled me.
  • This topic was interesting, but I really need to know where Hank got that amazing shark shirt
  • @jasepoag8930
    When it's 2:30 in the morning, and you're 10 rotting, fermented fruits deep, giving you that weird but fun floaty feeling you don't understand, the neanderthal girls start looking kinda cute...
  • @equarg
    🙄 Humans We either kill it....or “date it”.
  • @alishehab190
    I remember 2 years ago a paper came out where scientists discovered that some small amount of paternal mitochondrial DNA is also inherited and how now we need to reassess a lot of constructed lineages. I wonder how that would change what we know about Neanderthals and humans.
  • @feldar
    I don't understand the way we talk about prehistoric humans. If "our ancestors" interbred with Neanderthals, aren't Neanderthals also our ancestors? Also, why are a chihuahua, a poodle, and a golden retriever all considered the same species, while Homo Sapiens, Neanderthals, and Denisovans are all considered separate species?
  • @adambrown3918
    Incorrect video title. It's should be "How did Neanderthal's end up with Homosapien DNA". Denisovan and Neanderthals were humans too.
  • @PalimpsestProd
    I love that we can do this sort of research, mind blowing. Broken fragments of things far too small to see tell us who we used to be.
  • @angeliquea9557
    4:56 “Interbreeding between ancient humans isn’t just a scandalous secret in our family tree...” 🤣
  • @Undeadstein
    When a Cro-Magnon and neanderthal love each other very much
  • @mhendu00ify
    best episode in awhile, thoroughly enjoyed it, thank you.
  • @syneiro5497
    Thank you for helping me educate myself SciShow!
  • @SteveHazel
    i mean homo erectus split into homo sapiens and neanderthals, right? and also denisovans. before all 3 were around is was just homo erectus before em all, right? so at the time of all 3, all 3 should be able to easily breed i'd (totally) guess.
  • I’m supposedly in the 89th percentile for Neanderthal DNA markers. My lengthy caveman arms and brow ridge agree. Also by human you mean Homo sapiens. Those aren’t equivalent terms.
  • @nicolev8770
    On 23andme I have more Neanderthal than 96% of 23andme users. I have 318 genetic variants that can be traced to the Neanderthals. My ancestors definitely enjoyed mixing things up a bit. That song from Die Antwood comes to mind... " I think you freaky and I like you a lot" hahaha