/sci/ - Science & Math

It's proven, sub-saharan Africans are a different species

http://www.buffalo.edu/news/releases/2017/07/028.html

>A group of genomes from Sub-Saharan >Africa had a version of the gene that was >wildly different from versions found in other >modern humans.

>The Sub-Saharan variant was so distinctive >that Neanderthal and Denisovan MUC7 >genes matched more closely with those of >other modern humans than the Sub-Saharan >outlier did.

>“Based on our analysis, the most plausible >explanation for this extreme variation is >archaic introgression — the introduction of >genetic material from a ‘ghost’ species of >ancient hominins,” Gokcumen says. “This >unknown human relative could be a species >that has been discovered, such as a >subspecies of Homo erectus, or an >undiscovered hominin. We call it a ‘ghost’ >species because we don’t have the fossils.”

>Given the rate that genes mutate during the >course of evolution, the team calculated that >the ancestors of people who carry the Sub->Saharan MUC7 variant interbred with >another ancient human species as recently >as 150,000 years ago, after the two species’ >evolutionary path diverged from each other >some 1.5 to 2 million years ago.