Interbreeding with Homo sapiens helps to explain why millions can't straighten their fingers. There is also a Neanderthal gene variant that increases the risk of somebody dying from COVID-19. The study evidences that "intermingling" from Neanderthals and our Homo sapiens ancestors is consequential in examining the prevalence of certain diseases, researchers said. No more than 7% of the human genome is unique to Homo sapiens, according to a study published in the journal Science Advances. Brain development and function are what sets Homo sapiens apart, experts explained.

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Persons: sapiens, —, Hugo Zeberg, Nikola Solic, Zeberg Organizations: Service, British Society for Surgery, Karolinska Institute, Times Locations: COVID, Europe, Finland, Africa, Sweden, Asia