For variation to be a meaningful contribution to evolution, the traits that vary in ways meaningful to evolution have purely non-genetic components must be true.
Evolution is the area of evolutionary biology that studies how social interactions, especially between individuals of the same species, arise, change and are maintained. A particular focus is on how cooperative behavior can be beneficial despite the intuitive advantages of being selfish.
Genetic variations that alter gene activity or protein function can introduce different traits in an organism. If a trait is advantageous and helps the individual survive and reproduce, the genetic variation is more likely to be passed to the next generation which is a process known as natural selection.
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