NEET Solved Paper 2017 Question 75

Question: The genotypes of a Husband and Wife are $ {{|}^{A}}{{|}^{B}} $ and $ {{|}^{A}}|. $ Among the blood types of their children, how many different genotypes and phenotypes are possible?

Options:

A) 4 genotypes ; 4 phenotypes

B) 3 genotypes ; 3 phenotypes

C) 3 genotypes ; 4 phenotypes

D) 4 genotypes ; 3 phenotypes

Show Answer

Answer:

Correct Answer: D

Solution:

$ \underset{{I^{A}}{I^{B}}}{\mathop{Husband}}\times\underset{{I^{A}}i}{\mathop{Wife}}, $

Number of genotypes = 4 Number of phenotypes = 3 $ {{|}^{A}}{{|}^{A}} $ and $ {{|}^{A}}i=A $ $ {{|}^{A}}{{|}^{B}}=AB $ $ {{|}^{B}}i=B $