Re:Mitochondrial DNA can be inherited from fathers, not just...
by danieltillett on Tuesday January 15, 2019 @09:50PM
(#18917881)
Yes this is true at the genealogy level, but because of the way meiosis works once you get back more than about 12 generation some of your ancestors don’t pass any of their DNA down to you.
It's like seeing a human as the root of its ancestors tree, and saying that this tree is well balanced all the way to the nodes at depth 100 or so. But surely it's not a well balanced tree, more like a directed graph with many sideways connections. There could be multiple clusters, lineages, more or less narrow, coming from the bottom and reaching the top.