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These statistics sound wrong. Have sources?
Originally Posted by jaden
Surely, all Y-DNA and mtDNA haplogroups present in modern Europeans are African Homo Sapiens in origin, rather than Neanderthal. That puts a limit on the amount of autosomal DNA Neanderthals could have introduced, especially considering that mtDNA in particular has a relatively low bottlenecking rate and little selection pressure. I don't discount the hypothesis that certain autosomal traits could have been introduced via Neanderthal interbreeding and then selected for, but the total autosomal input can't be nearly as high as you're suggesting.