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Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
While most genes that modern humans gained through ancient interbreeding have been weeded out by evolution, a small fraction remains, most probably because they helped early modern humans adapt to the new environment when they left Africa for Eurasia.
Source: https://www.irishexaminer.com/news/arid-41290150.html