Question

Albinism, lack of pigmentation in humans, results from an autosomal recessive gene. Two parents

with normal pigmentation have an albino child. What is the probability that their next child will be
a wild type girl?
A) 3/4
B) 3/8
C) 1/2
D) 0%
E) 1/4

Answer 1

The probability that the next child will be a wild type girl is 1/2.

Step-by-step explanation:

The probability that the next child of two parents with normal pigmentation will be a wild type girl can be determined using Punnett square. The parents are both heterozygous for the albinism gene (Aa) and have an albino child. The possible genotypes of their next child are AA, Aa, and aa. Out of these, 50% will be wild type girls with normal pigmentation (AA), so the probability is 1/2 (option C).