Question

The mother has A+ blood group the father has B+ and the child is A+. What can be the possibility of genotypes of all three, respectively?

(A) I^AI^A | I^Bi | I^Bi

(B) I^AI^A | I^Bi | I^Ai

(C) I^Bi | I^AI^A | I^AI^B

(D) I^AI^A | I^BI^B | I^Ai

(E) I^Ai | I^Bi | I^Ai

Choose the correct answer from the option given below:

(1) C and D

(2) D and A

(3) A and B

(4) B and E

Answer 1

Correct option is (4) B and E

The child blood group is (A+) that means he must have received (i) allele from the father i.e. the father genotype is (I^Bi).

While mother can have I^AI^A or I^Ai genotype.

So, the possible genotypes of all three i.e. mother, father and child respectively would be either

(B) I^AI^A | I^Bi | I^Ai

(E) I^Ai | I^Bi | I^Ai