AP BIOLOGY

THE HUMAN IMMUNE SYSTEM

TRANSFUSION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A mom has blood type AB+ and father has AB-. What are the blood type probabilities for their offspring?
A
50% A+, 25% B+ and 25% AB+
B
50% A-, 25% B+ and 25% AB+
C
50% AB+, 25%A+ and 25% B+
D
50% AB-, 25%A-and 25% B-
Explanation: 

Detailed explanation-1: -If the father is heterozygous, there is a 50% probability for a blood type A child and a 50% probability for a blood type O child. If the father is homozygous, every offspring will be blood type A. The mother of the child is Rh+. She may be homozygous or she may be heterozygous with one Rh+ allele and one Rh-allele.

Detailed explanation-2: -Believe it or not, in this case having a blood type different from either parent is by far the most common result. In most cases, an O parent and an AB parent will have only A or B kids.

Detailed explanation-3: -The chance for AB blood group is 37.5% .

Detailed explanation-4: -So, the correct option is ‘AB and B’.

There is 1 question to complete.