A child has blood groups 'O'. If father has blood group 'A' and mother has blood group 'B'. Work out the genotypes of the partents

Options

A. `I^(A)I^(A) and I^(B) i`
B. `I^(A)i and I^(B) i`
C. `I^(A)i and ii`
D. `ii and I^(B)I^(B)`

Answer

B

Explanation

If father has blood group 'A', mother has blood group 'B', and the child with blood group 'O' appears in progeny, this means that the parents are heterozygous.
`{:("Parents","Man",xx,"Woman"),("Genotype",I^(A)i,,I^(B)i),(underset("of proigeny")("Gametes"),I^(A)","i,,I^(B)","ii),("Blood groups","AB A",,"B O"):}`