The Balance Model of Genetic Variation Proposes That

The balance model of genetic variation proposes that

A) levels of genetic variation are determined by a balance between genetic drift and gene flow.
B) natural selection maintains genetic variation in populations.
C) most individuals in a population will be homozygous for alleles favored by natural selection.
D) recurrent mutation and random processes maintain variation without natural selection.
E) alleles that function best are strongly favored by natural selection.