After 32 generations (~800 years) you have more genealogical ancestors than there are base pairs in human DNA. There literally isn’t enough resolution to store a “record” of each of your ancestors, even if you inherited exactly 1 base pair from each ancestor.
Additional complications make it an even shorter timeline. After about 8 generations, you share no more DNA with your ancestors than you do with a random stranger.
Politically this should be more well known. Of course, racists and fascists rely on “blood quantum” arguments to justify racial or ethnic oppression. But they don’t invent this idea of strict genetic identity. It’s latent in the population.
Leftists should more frequently call out genetic tests like 23andMe as inherently racist because it’s based in race science nonsense. It may not be as obvious as Nazis invoking aryan genes or whatever; but it’s still just as incorrect when your aunt at Thanksgiving talks about how she discovered she’s 2% Choctaw or whatever
Really highlights just how ass-backwards Richard Dawkins is when he suggests DNA is the begging and the end, the only thing that actually matters
Dawkins is a piece of shit for a number of reasons, but where did he ever say anything like that?
Perhaps I'm misremembering, but I'm pretty sure he describes everything about life as just a means for DNA to propagate itself. As if DNA isn't merely a component in a larger, more complex and complicated system, but as the reason for the whole thing.