Albinism,lack of pigmentation in humans,results from an autosomal recessive gene a .Two parents with normal pigmentation have an albino child.What is the probability that their next child will be an albino girl?
A)1/4
B)3/4
C)1/8
D)1/2
E)1/3

Question

Quizplus · Accepted Answer

Since albinism is caused by an autosomal recessive gene, both parents must be carriers (Aa) to have an albino child (aa). The probability of having an albino child is 1/4. The probability of having a girl is 1/2. Multiplying these probabilities gives 1/4 * 1/2 = 1/8.

Albinism,lack of Pigmentation in Humans,results from an Autosomal Recessive Gene