Question

If two brown-eyed people have a blue-eyed child, we can deduce which of the following? A. The gene for blue eyes is sex-linked. B. The gene for blue eyes is recessive. C. The child's eye color is the result of mutation. D. The gene for brown eyes is recessive

Answer 1

The correct answer is B. Brown eyes are dominant. Each parent has a brown gene and a blue gene. Their child got the blue gene from each parent and has two blue genes which is the only way recessive genes are phenotypically expressed.