Freckles are caused by a dominant allele.A man has freckles but one of his parents does not have freckles.What is his genotype?
A)Homozygous dominant
B)Homozygous recessive
C)Heterozygous
D)Heterologous
E)Homologous

Question

Quizplus · Accepted Answer

The fact that one of the man's parents does not have freckles suggests that the parent is homozygous recessive, meaning they have two copies of the recessive allele. Since the man has freckles, he must have at least one copy of the dominant allele. Therefore, the man's genotype must be heterozygous (one dominant allele and one recessive allele).

Freckles Are Caused by a Dominant Allele