Gene flow is one way that the gene pool of a population can change. In which of these situations would gene flow occur? A. Indiv

Gene flow is one way that the gene pool of a population can change. In which
of these situations would gene flow occur?
A. Individuals move from one population into another.
B. Mutations in the buds on a tree cause some of its leaves to curl.
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C. A dog breeder uses artificial selection to get healthier puppies.
D. A disturbance causes a random change in allele frequencies.