Mom has a 2nd blood group, dad has a 3rd, determine the possible blood groups in children.

Given:

AA, A0- second group

BB, B0 – third group

Find: F1

Solution:

Let’s consider all the options:
1) P: ♀AA x ♂BB

Gametes: A, B

F1: AB

Answer: All children of 4 blood groups

2) P: ♀AA x ♂B0

Gametes: A, B, 0

F1: AB, A0

Answer: 50% with group 4, 50% with the second

3) P: ♀A0 x ♂BB

Gametes: A, 0, B

F1: AB, B0

Answer: 50% with group 4, 50% with group 3

4) P: ♀A0 x ♂B0

Gametes: A, 0, B, 0

F1: AB, A0, B0, 00

Answer: 25% with group 1, 25% with 2, 25% with 3, 25% with 4.