Question

As per ABO blood grouping system, the blood group of father is $B^+$ , mother is $A^+$ and child is $O^+$. Their respective genotype can be
A. $I^B i/I^A i/ii$
B. $I^B I^B /I^A I^A /ii$
C. $I^A I^B /iI^A /I^B i$
D. $I^A i/I^B i/I^A i$
E. $iI^B /iI^A /I^A I^B$
Choose the most appropriate answer from the options given below :

• A. A only
• B. B only
• C. C & B only
• D. D & E only

Answer 1

Answer: (A)

A only

Answer 2

- The father’s blood group is B+, which indicates his genotype is likely IBi or IBIB.

- The mother’s blood group is A+, which indicates her genotype is likely IAi or IAIA.

- The child’s blood group is O+, which indicates their genotype must be ii, as O type individuals are homozygous for the O allele.

Thus, the correct genotypes are: Father- IBi, Mother- IAi, Child- ii.