Kamar wants to know his mother's blood type. Kamar knows that his blood type is AB and his father’s blood type is heterozygous A. What can Kamar assume about his mother’s blood type?(1 point)

Question

Responses

Kamar’s mother must be O because the recessive allele allows for Kamar to get type A from his father
Kamar’s mother must be O because the recessive allele allows for Kamar to get type A from his father

Kamar’s mother must be either A or O because blood type AB is considered incomplete dominant.
Kamar’s mother must be either A or O because blood type AB is considered incomplete dominant.

Kamar’s mother must be AB because blood type AB is inherited from one parent
Kamar’s mother must be AB because blood type AB is inherited from one parent

Kamar’s mother must be either AB or B because blood types AB is considered codominant

Answer 1

To determine Kamar's mother's possible blood types, we need to analyze the genetic information provided:

1. Kamar has blood type AB, which means he has one allele for A and one allele for B.
2. Kamar's father is heterozygous A, which means he can have either two A alleles (AA) or one A and one O allele (AO).

Since Kamar's father must provide either an A or an O allele, and Kamar has blood type AB (having both A and B alleles), the B allele must come from Kamar's mother. This means that Kamar's mother must have at least one B allele.

Given these points, Kamar's mother could potentially have the following blood types:

• B (which is BB or BO)
• AB (which has one A and one B allele)

Kamar's mother cannot be blood type O, as that would mean she has no B allele to pass on.

Therefore, the correct response is: Kamar’s mother must be either AB or B because blood types AB is considered codominant.