Question

Galactosemia is a recessive human disease that is treatable by restricting lactose and glucose in the diet. A couple is heterozygous for the galactosemia gene.

a. Ifthe couple has four children, what is the probability that none of the four will have galactosemia? 3/4

b. If the couple has four children, what is the probability that at least one of the children will have galactosemia? S. Ifthe couple has four children, what is the probability that the first two will have galactosemia and the second two will not?

Answer 1

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