Mutation is the Only Evolutionary Mechanism That

Question

Mutation is the only evolutionary mechanism that
A)introduces new alleles into the population.
B)is more important in eukaryotes than in prokaryotes.
C)occurs frequently in all populations.
D)has no effect on genetic variation/evolution.
E)A and C

Accepted Answer

Mutation is the only mechanism that introduces new alleles (variants of genes) into a population. Other mechanisms, such as natural selection, genetic drift, and gene flow, can change the frequency of existing alleles but cannot create new ones. Mutation occurs relatively infrequently in all populations, but it is still an important source of genetic variation over long periods of time.