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) 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 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 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.

1 answer

To determine Kamar's mother’s possible blood type based on the blood types of Kamar and his father, we can analyze the genetic inheritance of blood types.

Blood type is determined by the presence of A and B alleles:

  • Kamar has blood type AB, which means he has one A allele and one B allele (genotype: AB).
  • Kamar's father has blood type A and is heterozygous, which means he could have either AA or AO genotype. For Kamar to have inherited the A allele from his father (father's genotype: AO), the mother must provide him with the B allele.

Since Kamar has the AB genotype, the possible blood types for Kamar's mother must allow for the inheritance of the B allele, as Kamar received the A allele from his father and the B allele from his mother.

The possible blood types for Kamar's mother are:

  • AB (provides B)
  • B (provides B)
  • A would not work since it would provide another A allele instead of a B allele.
  • O would not work since it provides no A or B alleles.

Thus, the correct conclusion is: Kamar’s mother must be either AB or B because blood type AB is considered codominant.