One parent has one copy of a dominant allele for gene 87 and one recessive allele for Gene 87. The other parent has two copies of the recessive alleie for Gene 87. What is the chance that their children will inherit the recessive condition (two oopies of Gene 871? You may need to draw a Punnett square to figure this out

a. 0%
b. 25 %
c. 50 %
d. 75 %
e. 100%

50%

Explanation:

Let represent the dominant allele by ''R'' and the recessive allele by ''r'' in Gene 87.

The first parents has one dominant and one recessive allele for gene 87 denoted by ''Rr''

And the second had two recessive allele for gene 87 denoted by ''rr''

When both parents mate the possible genotype for gene 87 for their child is

Rr rr Rr rr

This means that the chances that a child will inherit two recessive allele (rr) for gene 87 is 2/4. In percentage 2/4 * 100 = 50%

While the chances that a child will inherit one dominant and one recessive allele is also 2/4. In percentage 2/4 * 100 = 50%

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