Natural selection occurs when:.
a. a factor in the environment alters the genetic information in DNA of all members of a species.
b. only when nonrandom mating occurs.
c. a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.
d. when a small number of individuals of a population break away and form a new population.
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Natural selection occurs when:.
a. a factor in the environment alters the genetic information in DN...
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