If having long fur helps a guinea pig survive, then it is expected to see the F allele is more common in the population as it evolves.
What is natural selection?
Natural selection can be defined as the process of differential survival and reproduction of the fittest organisms.
The fittest organisms are life forms that have allele combinations favoring their survival and reproduction.
In this case, the F allele is an adaptive allele associated with higher fitness in the population.
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