A father has two copies of a lactose persistence allele, he is homozygous dominant. The mother has one copy of that allele, she is heterozygous. Both of the parents are lactose tolerant. What is the probability of passing down a lactose persistence allele?

A) 0%

B) 25%

C) 75%

D) 100%

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21 December, 12:55

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Heidi May · Answer 1

The answer is C. (use Punnett squares)

A father has two copies of a lactose persistence allele, he is homozygous dominant. The mother has one copy of that allele, she is heterozygous. Both of the parents are lactose tolerant. What is the probability of passing down a lactose persistence allele?A) 0%B) 25%C) 75%D) 100%