Q. The genotypes of a Husband and Wife are $I^AI^B$ and $I^Ai$. Among the blood types of their children, how many different genotypes and phenotypes are possible ?
A) 3 genotypes ; 3 phenotypes
B) 3 genotypes ; 4 phenotypes
C) 4 genotypes ; 3 phenotypes
D) 4 genotypes ; 4 phenotypes
Explanation
[Solution] Children: $I^AI^A$, $I^Ai$ (both A), $I^AI^B$ (AB), $I^Bi$ (B): 4 genotypes, 3 phenotypes. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.