A man with blood type AB(AB) Married and has children with a woman. Who has blood type O(OO) what percentage of phenotype can we expect in their offering

1 answer

To determine the possible blood types of the children from a man with blood type AB and a woman with blood type O, we can start by looking at the possible alleles each parent can pass on.

  • The father with blood type AB has the genotype IAIB (where IA represents the A allele and IB represents the B allele).
  • The mother with blood type O has the genotype ii (where the lowercase i represents the O allele).

When these two parents have children, the possible combinations of alleles can be determined by creating a Punnett square:

| | IA | IB | |-------|-------|-------| | i | IAi | IBi | | i | IAi | IBi |

The offspring can inherit the following genotypes:

  • IAi (Blood type A)
  • IBi (Blood type B)

Now, since both IAi and IBi result in distinct phenotypes, we can summarize the expected phenotypes of their children:

  • 50% will have blood type A (genotype IAi).
  • 50% will have blood type B (genotype IBi).
  • There will be no children with blood type O or AB.

In summary:

  • 50% of the children can be expected to have blood type A.
  • 50% of the children can be expected to have blood type B.

Therefore, the expected phenotype percentages are:

  • 50% Blood Type A
  • 50% Blood Type B