Question

A man having blood group O marries a woman having blood group B and they have a daughter. What will be the blood group of the daughter?

 

Answer 1

The answer to this question depends on whether the blood group B of the woman has gene combinationI^BI^B or I^BI^O.
In the first case (i.e., when the blood group B has genotype I^BI^B), the daughter will have blood group B. This is because here the gene I^B is dominant over gene I^O.
In the second case (i.e., when the blood group B has genotype I^BI^O), there stands an equal chance for the genotype of the daughter's blood to be either I^BI^O or I^OI^O. Due to this, there is an equal chance for the daughter to acquire blood group B or blood group O.