Health
7 Virus Variants Found in U.S. Carrying the Same Mutation – The New York Times
Scientists don’t know yet whether the mutation makes the variants more contagious, but they are concerned that it might.
I think theres a clear signature of an evolutionary benefit, Dr. Kamil said.
The history of life is full of examples of so-called convergent evolution, in which different lineages follow the same path. Birds gained wings as they evolved from feathered dinosaurs, for example, just as bats did when they evolved from furry, shrew-like mammals. In both cases, natural selection gave rise to a pair of flat surfaces that could be flapped to generate lift enabling bats and birds alike to take to the sky…
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