AP BIOLOGY

HEREDITY

MULTIPLE ALLELES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A man with blood type B has children with a woman who is blood type A. They have eight children, four have AB blood and four have type B blood. What are the parents’ genotypes?
A
IAIA and IBIB
B
IAi and IAIB
C
IAi and IBIB
D
IAIA and IBi
Explanation: 

Detailed explanation-1: -One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types.

Detailed explanation-2: -A woman with type A blood and a man with type B blood could potentially have offspring with either type A or B or AB blood.

Detailed explanation-3: -Yes, it is possible that a father with an A-blood type and a mother with a B-blood type could have an offspring that has an O-blood type. The difference in blood type between parents and offspring is possible provided that both parents are heterozygous and carries the gene that codes for the O-blood type.

Detailed explanation-4: -The chance for A blood group is 37.5% + 12.5% = 50% . The chance for B blood group is 12.5% . The chance for AB blood group is 37.5% .

There is 1 question to complete.