Brian and Michael are brothers and they both inherited a gene for blue eyes. However, Brian's eyes are brown. How is that possible?
A) The genes that Brian and Michael inherited were corrupted in Brian's case.
B) Brian's genotype included genes for blue eyes only, but his eye color changed due to the lack of sunlight in his bedroom.
C) Michael's phenotype hides the fact that he inherited genes for brown eyes.
D) Brian's genotype included alleles for blue and brown eyes.

Question

Quizplus · Accepted Answer

Brown eyes are dominant over blue eyes. Brian inherited a gene for blue eyes from one parent and a gene for brown eyes from the other, making his eyes brown due to the dominance of the brown eye allele.

Brian and Michael Are Brothers and They Both Inherited a Gene