Suppose that eye color is a single gene trait and that brown eyes is a dominant allele and blue eyes is a recessive allele. If Mark has brown eyes, we would know:
A) that Mark is heterozygous for the eye color trait
B) that Mark is homozygous for the eye color trait
C) Mark's genotype
D) Mark's phenotype

Question

Quizplus · Accepted Answer

In genetics, the phenotype refers to those traits that are expressed in the individual. Thus, we know the phenotype: Mark has brown eyes.

Suppose That Eye Color Is a Single Gene Trait and That