question_answer

What percentage of homozygous \[R{{h}^{-}}\] will be born amongst 4 children couple where the husband is heterozygous for \[R{{h}^{+}}\]and wife is homozygous for \[R{{h}^{-}}\] gene?

A)  25%           

B)  50%

C)  75%           

D)  100%

Correct Answer: B

Solution :

The husband is heterozygous for\[R{{h}^{+}}\]so, it  will by (Rhrh) and wife is homozygous of Rh- so it will have genetic alleles (rhrh) So, 50% homozygous Rh~ children will be born.