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

Answer 1

To determine Kamar's mother's blood type based on the information given:

1. Kamar's blood type is AB, which means he has one allele for A and one allele for B.
2. Kamar's father's blood type is heterozygous A, meaning he has either genotype AA or AO.

Since Kamar is AB, he must have inherited one A allele from his father. Therefore, he must have inherited the B allele from his mother.

Knowing this, Kamar's mother must have at least one B allele. The possible blood types that include a B allele are:

• B (genotype could be BB or BO)
• AB

Kamar's mother cannot have blood type O, as this would not provide a B allele.

Thus, the correct assumption about Kamar's mother's blood type is:

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