Question : A woman with O blood group marries a man with AB blood group (i) Work out all the possible phenotypes and genotypes of the progeny.(ii) Eiscuss the kind of dominace in the parents and the progeny in this case.

Question : A woman with O blood group marries a man with AB blood grou

1.	Question : A woman with O blood group marries a man with AB blood group (i) Work out all the possible phenotypes and genotypes of the progeny.(ii) Eiscuss the kind of dominace in the parents and the progeny in this case.
Answer» Solution :(i) Blood GROUP AB has alleles as `1^A,1^B` and O group has II which on cross gives the both blood GROUPS A and B while the genotype of PROGENY will be `I^Ai and I^B i`. (ii) `I^A and I^B` are equally dominant (co-dominant). In multiple allelism, the GENE I exists in 3 allelic forms, `I^A,I^B` and i.