Question

What Does Positive Selection Mean?

Answer 1

Positive selection:

1. Positive selection refers to the Darwinian selection that is based on incorporating advantageous mutations.
2. It refers to the process by which new advantageous genetic variants continue to persist in a population.
3. It increases the frequency of beneficial mutations that increase fitness.
4. It can also be selected based on a gene expression level.
5. For example, male seminal proteins involved in sperm competition, membrane receptor proteins involved in the innate immune system, or the memory formation in B-cells that helps in developing immunity.