Variation in a trait is a required condition for natural selection to act on a population for that trait. assuming a population of organisms only started with only one form of a trait, what are three ways variation in the trait could be introduced into the population?

question 3 options:

genetic mutation, gene flow, and genetic recombination


genetic recombination, interbreeding, and genetic mutations


genetic mutations, interbreeding, and genetic recombination


reduction in population, gene flow, genetic recombination