>>10984478This so close to the human-neanderthal split it's scary, because it implies we may have become 46 chromosomed at the same time we became 'Neandersovans' as they now call us as recently.
And what *that* means is that we became reproductively isolated from apes less than 1mya. Considering how apeish we were before Neandersovans, there wasn't much genetic difference otherwise as well.
Also;
>https://www.ncbi.nlm.nih.gov/m/pubmed/11863072/>During our search for evolutionary breakpoints on the Y chromosome, it transpired that a transposition of an approximately 100-kb DNA fragment from chromosome 1 onto the Y chromosome must have occurred in a common ancestor of human, chimpanzee and bonobo. Only the Y chromosomes of these three species contain the chromosome-1-derived fragment; it could not be detected on the Y chromosomes of gorillas or the other primates examined. Thus, this shared derived (synapomorphic) trait provides clear evidence for a Homo-Pan clade independent of DNA sequence analysisThe Y chromosomes of man, chimp and bonobo have an *introgression on the Y chromosome.*
The crazy thing is, BT is monophyletic - all BT's carry certain 'root mutations.' But, some branches of A have mutations that no other A has in common, and some A's have mutations that are downstream of the BT root.
What *that* means is it looks more like A split from BT in the first place, and also that the special mutations that define Y-A could have entered it;
>https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3174671/>>Extensive simulation results reject the null model of no admixture and allow us to infer that contemporary African populations contain a small proportion of genetic material (≈2%) that introgressed ≈35 kya from an archaic population that split from the ancestors of anatomically modern humans ≈700 kyaSo there you have it - man evolved in Eurasia from Orangutan, and an African branch evolved dark skin.