![]() ![]() Some, like those behind the bubonic plague, have had a big impact on our immune systems. "Our genome today is a reflection of our whole evolutionary history" as we adapt to different germs, said Luis Barreiro, a senior author of the research. It's a prime example of the way germs shape us over time, scientists say in a new study published Wednesday in the journal Nature. ![]() ![]() Our medieval ancestors left us with a biological legacy: Genes that may have helped them survive the Black Death make us more susceptible to certain diseases today. ![]()
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