A genetic signature for positive selection is

Question

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A genetic signature for positive selection indicates that a certain gene has been under positive selection in a particular species. This means that the gene has undergone evolutionary changes that have resulted in a selective advantage for the species. A gene sequence present in humans and other primates, but with at least one amino acid difference in the encoded protein in humans is a clear example of positive selection. This indicates that the gene has undergone a change that may provide an advantage for humans, and not other primates, in the environment they live in.

A Genetic Signature for Positive Selection Is