[im3w1l]

How certainly do we actually know that? If the evidence you claim is that there are no Y-chromosomes from other hominids, an alternative explanation could be that hybrids with Y-chromosomes from other hominids did exist, but disappeared gradually over the centuries/millenia either because they were less fit or through pure chance.

Are there any now living people with mt-dna from other hominids?

Having a minority non-autosomal genotype could be an issue as there might be recurring "compatibility problems", given that the autosomal dna would mainly evolve to work with the majority mtdna and ydna.

[ginko]

The genetic evidence points into the other direction:

> There is considerably less Neanderthal ancestry on the X-chromosome compared to the autosomal chromosomes, which similarly suggests that admixture with modern humans was primarily the result of mating between modern human females and Neanderthal males.

https://en.wikipedia.org/wiki/Neanderthal_genetics#Parentage

[IAmBroom]

Chicks dig those big, furry eyebrows.