a man with blood group B marries a woman with blood group O and their daughter has blood group Of. is this information sufficient to tell you which of the traits that is blood group B or O is dominant? why or why not?
Answers
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant
The information is not enough to decide which blood group is dominant.
But universally , blood group A is dominant whereas blood group O is recessive.
case 1: For an A group father it may be homozygous (AA) or heterozygous(A0) as pairs.So as A is dominant and an O group mother, the O group is recessive, then the daughter may have either group O Or A.
If A from father crosses with O of mother then blood group of daughter =A(dominant)
case 2:But if O from father crosses with O of mother then blood group of Daughter=) (as recessive) blood group expressed in homozygous condition.