If an individual that phenotypically has dominant traits is mated to another individual that also has dominant traits and the progeny have both dominant and recessive traits it indicates that
A)Both parents are homozygotic
B)Both parents are heterozygotic
C)No conclusions can be made about the genotypes of the parents
D)One parent is heterozygotic and one is homozygotic

Question

Quizplus · Accepted Answer

If the progeny have both dominant and recessive traits, it indicates that both parents are heterozygotes (carrying one dominant and one recessive allele). If one parent was homozygote dominant and the other heterozygote, then all progeny would display dominant traits. Therefore, we can conclude that both parents possess at least one copy of the recessive allele.

If an Individual That Phenotypically Has Dominant Traits Is Mated