A mutation in the Fut1 gene can have a strange effect on blood type. Someone who has 2 copies of the Fut1 mutation (hh) is said to have the Bombay phenotype. No matter what their alleles are for A, B, AB, O blood groups (controlled by a separate gene- not Fut1), someone with a Bombay phenotype (genotype hh) will have type O blood. Consider the following couple who are having children:
Female IAIB Hh x Male IAIA Hh
What are the probable phenotypic ratios of their children for blood type?
Question 25 options:
3/8 A, 3/16 AB, 3/16 B, 1/4 O
3/8 A, 3/8 AB, 1/4 B, no O
1/3 A, 1/3 AB, 1/3 O
1/4 A, 1/4 B, 1/4 AB, 1/4 O
9/16 A, 3/16 AB, 3/16 B, 1/16 O
3/8 A, 3/8 AB, 1/4 O
1/2 A, 1/2 AB