You DON’T Descend From All Your Ancestors

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2024-07-17に共有
This video explains the difference between genetic and genealogical descent, showing why most of our genetic ancestry is lost over a short number of generations. For further information, check out David Reich’s book, Who We Are and How We Got Here: www.amazon.com/Who-Are-How-Got-Here/dp/110187032X/

Download the soundtrack to this video here: ko-fi.com/marcusgallo9000

Music made with FL Studio
Art made with Asesprite
Animations made with After Effects

コメント (21)
  • One correction: If you have living descendants in 400 years, you only have a 3% chance of contributing to the genetic makeup OF ANY SINGLE descendant. If you have at least a few tens of descendants, chances are good that you contributed something to their genetics
  • This video doesn't descend from all of my youtube video history, but here it is
  • My ancestor of 15 generations ago might not have given me any genes but had this person not lived or not had any children I wouldn't have existed.
  • Even though we don't share any genetic info from those ancient we still wouldn't be here without them. It's trippy
  • I've been really enjoying YouTube algorithm recommending me smaller but high production value channels as of late instead of just rehashes of the same 10 topics
  • “…one might imagine it’s irrelevant how many theoretical ancestors a person had 32 generations ago. Due to cousin marriage…” You know I was not imagining that at all actually but it’s a fair point.
  • In asian culture, we worship our ancestors. We may not be biologically related a few hundred years in the past. But all of their efforts lead up to our existence. That is why we thank them for what they did for us all.
  • A recent study, from Japan I think, found several men who had passed on their mitochondrial DNA. Now that the researchers knew that was possible they looked at more men and found more. This changes genealogical descent completely.
  • @jgr7487
    The problem with choosing King Charles III is that we know how noble families did favor inbreeding in a higher level than the common folk. He may have inherited some genes from a 15th generation ancestor from different branches of the European noble family.
  • I may not have the genes of my ancestors from 400 years ago, but I'm still a product of them. Without them, I wouldn't have been born. My cells may not have any of their genetic material, but I exist because of them. To me that's something more profound than having a small sliver of DNA from 4 centuries ago.
  • This simultaneously manages to be an extremely informative scientific video and a tribute to old school Nintendo music and graphics.
  • Does this mean that if I took a time machine and met my 15x great grandfather (a man who was requisite in my existence), we are literally not blood related? That is a MINDBLOWING concept.
  • How did i just stumble apon the most interesting youtube video ever, and it only has 63 views? great work bro love this style.
  • @SHRBJHD
    For a second I thought you said there were only 4 types of *bass player*, to which I instantly agreed.
  • 6:22 absolutely incredible sequence, really drives home how we're all connected
  • Good morrow, my lord. You will soon be graced by the presence of his Majesty, YouTube Algorithm. May it serve your channel dutifully.
  • @Lulandoo
    Youtube algorithm is mysterious, but nonetheless this video is really great. I find pixel art really pleasant. Keep up the good work.
  • This is something I've wondered and thought about for years. You've done a great job of making sense of why I didn't have tens of billions of ancestors when we began our calendar.
  • @Alicja1Fenigsen
    wow! my children asked the same question when they turned ten, in the early nineties. I did a very, VERY rough calculation on the spot, at the kitchen stove, and arrived at exactly the same result: going back, at around 1200A.D. we ran out of ancestors and have to reuse the same ones over and over again!!! I am so proud, thank you!