Question

Possible blood group in children from the parents with ‘B’ and ‘O’ blood group are A) All B B) All O C) Both B and O D) A and B​

Answer 1

Answer:

C

Explanation:

Answer 2

Answer:

C) Both B and O

Explanation:

Human blood group inheritance is the example of codominance and multiple alleles. It is governed by three alleles namely IA, IB and IO. IA and IB show codominance while allele IO is recessive to both IA and IB. 

The genotype of a person with “A” blood group can be IAIO or IAIA and that of the parent with AB blood group is IAIB.  The alleles IA, IO and IB can make three genotypic combinations, namely IAIA, IAIO, IAIB and IBIO. Thus, the possible blood group of their children is A, B and AB. To have a child with O blood group, both parent should have at least one IO allele; thus they can’t have a child with O blood group.