A Population of Drosophila Simulans Carries Three Alleles at the White

Multiple Choice

A population of Drosophila simulans carries three alleles at the white locus: the wild-type allele at 86 percent, w₁ at 9 percent, and w₂ at 5 percent.What can we say about this population?

A) There must be other alleles that have not been sampled.
B) The population is polymorphic.
C) w₁ must be dominant to w₂.
D) w₂ must be dominant to w₁.
E) The white locus has pleiotropic effects.