natural selection

(1) Gene Flow (aka migration): The movement of alleles into or out of a population

(2) Genetic Drift: The change in allele frequencies as a result of chance

(3) Mutations: The random change in the DNA of an organism

(4) Sexual Selection: Individuals have a choice in who they mate with – not random

(5) Natural Selection: Better adapted (more fit) individuals to their environment survive and

reproduce