Question

A man with blood Group A marries a woman with blooalligroup and
thoky daughter has blood group o is this information enwoh to tell you
Much of the traits blood group A oro - is dominant? Why or why not?​

Answer 1

The given information is not enough to determine the traits- blood group A or O is dominant.In ABO blood grouping blood type A is always dominant whereas, the blood type O is always recessive.

Here the father's blood group is A hence, it can either be homozygous (AA) or heterozygous (AO).

The mother's blood group is O and it is only possible if it is heterozygous (OO).

For the daughter to have blood group O the father must be heterozygous (AO) and mother must be (OO).

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