Question

Albinism is a recessive condition resulting from the inability to produce the dark pigment melanin in skin and hair. A man and woman with normal skin pigmentation want to have two children. The man has one parent with albinism; the woman has parents with normal pigmentation but a brother with albinism. (2 points each) (Hint: remember that with 2 children there are four possible phenotypic outcomes—opposite phenotypes can occur in two different birth orders) a. What is the probability that at least one child will be have albinism? b. What is the probability of both children having normal pigmentation?

Answer 1

probability for one child will be albinism is 1/6

Man has one albino parent

women has normal pigmentation

Explanation:

In the given statement

For A probability is 2/3

probability for B is 1/4

Father X mother X then

probability will be 1/6 (albino child)

As it has been explained in the following attachment.

A a is albino child then probability will be 1/6