Question

A woman with type A blood (whose father was type O) has children with a man that has type O blood. Both individuals are heterozygous for the MN antigen.

Recall that MN blood group antigens are independent of the ABO locus, and that the alleles are codominant.

Determine the proportion of various phenotypes of offspring that this couple may have.

Type A with M antigen:

Type A with M and N antigens:

Type A with N antigen:

Type O with M antigen:

Type O with M and N antigens:

Type O with antigen:

Options: 0, 1/8, 1/4, 1/2, 3/4, 1

How would the results from Part A change if both parents are also heterozygous for the gene controlling the synthesis of the H substance (Hh)?

Type A with M antigen:

Type A with M and N antigens:

Type A with N antigen:

Type O with M antigen:

Type O with M and N antigens:

Type O with antigen:

Options: 0, 1/32, 3/32, 5/32, 6/32, 10/32, 1

Answer 1

1/4

Step-by-step explanation:

Answer 2

The answer are:

a) Type A with M antigen: 1/8

Type A with M and N antigens: 1/4

Type A with N antigen: 1/8

Type O with M antigen: 1/8

Type O with M and N antigens: 1/4

Type O with N antigen: 1/8

b) Type A with M antigen: 3/32

Type A with M and N antigens: 6/32

Type A with N antigen: 3/32

Type O with M antigen: 5/32

Type O with M and N antigens: 10/32

Type O with antigen: 5/32

Step-by-step explanation: