Microevolution involves
A. an increase in the number of individuals in a population, but not a change in allele frequency.
B. changes in a population's gene pool.
C. changes in the ratio of males to females in a population.
D. an increase in the number of individuals and a change in the ratio of males to females.
E. an increase in migration, but not a change in allele frequency.
B. changes in a population's gene pool.
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