Question

Albinism is a recessive trait in humans that is controlled by a single gene. how many recessive alleles must a person have to have albinism?

a. 2

b. 3

c. 1

d. 0

Answer 1

Answer: a. 2

If there is a dominant allele, it will overpower the recessive allele for albinism; therefore, a person must have 2 recessive alleles to have this recessive trait