A group of scientist in the UK now think that some of the bad genes that modern humans have actually came from Neanderthals, like 2 diabetes, Crohn’s disease. Sriram Sankararaman leads a team that tested the genomes of 1004 adults and found that in some regions, modern humans actually have between 2% and 4% of the Neanderthal genes instead of the modern human one.
The change hasn’t been all bad according to the study, it allowed us to get more hair to stay warm in northern climates as modern human migrated north and met neanderthal, where they apparently procreated. Sadly, a high percentage of those offspring were sterile because scientist thinks Neanderthals and modern humans are only barely compatible to procreate genetically speaking.
Interestingly, the gene associated with difficulty in stopping smoking also came from Neanderthals.
The results, however, are disputed by other reports that suggest Neanderthals died out before modern humans came to be.
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