Question

in a family there are four children with all the four different types of blood groyps how is it possible show genotypes of parents and offsprings.

Answer 1

The possible genotype of parents with different blood groups in all four children will be I^Ai (say father) and I^Bi (say mother).
The genotype of children will be I^AI^B, I^Ai, I^Bi, ii and phenotype will be blood groups AB, A, B and O.

This can be predicted by the cross shown as under:

	IA	i
IB	IAIB (AB blood group)	IBi (B blood group)
i	IAi (A blood group)	ii (O blood group)