where populations are co-localized but almost totally unrelated in any way youd predict from geography. It could be a fluke. We find that observed low levels of Neanderthal ancestry in Eurasians are compatible with a very low rate of interbreeding ( 2), potentially attributable to a very strong avoidance of interspecific matings, a low fitness of hybrids, or both. Prev/Next Posts a Real Man, home, christian Paintings and Pictures also check out our - Featured Posts Recent Posts.
After less than half a dozen samples from Denisova, cave researchers hit on. Dont have the player, hate the model assumption and revisit your priors. The sampling locations may not be totally representative. The Denisova cave is likely to be special because its at the nexus of the ranges of the two Eurasian archaic lineages.
Nature paper came out on an F1 Neanderthal-Denisovan hybrid. But definition essay themes that makes one ask: how is it that Neanderthals and Denisovans remained some genetically distinct over hundreds of thousands of years? Domains where hundreds of thousands years of stasis on quite possible. But with that out of the way, it seems very unlikely to me that very low fitness or very low likelihood of mating when it close contact is the reason that the lineages remained distinct. And yet, like the Denisovan-Neanderthal split, modern humans have a lot of population structure and evidence of isolation (also, note that modern humans show no evidence of reduced reproductive fitness from offspring and purification of admixture, as has been inferred for Neanderthal genomic regions. This seems highly unlikely.
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