Tag: evolution

Humans Still Evolving, Large-Scale Study of Genetic Data Shows

In a study analyzing the genomes of 210,000 people in the United States and Britain, researchers have found that the genetic variants linked to Alzheimer’s disease and heavy smoking are less frequent in people with longer lifespans, suggesting that natural selection is weeding out these unfavorable variants in both populations. “It’s a subtle signal, but we find genetic evidence that…

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