Problem: A woman has a daughter. There are three men whom she claims might have been the father of the child. The judge in the paternity court orders that all three men, the child, and the mother have blood tests. The results of blod typing are given below:The mother claims that this proves that Man#3 must be the little girl's father. Is the mother correct? Why or why not?

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FREE Expert Solution

In this problem, 3 Punnet squares are necessary to somehow estimate the identity of the father. It is thus, necessary to determine their genotypes. And their genotypes are as follows:

Mother - type A may either have  the IAi or IAIA

Daughter - type O is always the recessive trait. Her genotype is  therefore ii.

Man #1 - type AB will always have both alleles IA and IB.

Man #2 - type B may either have the IBi or IBIB.

Man #3 - His genotype is also ii.

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Problem Details

A woman has a daughter. There are three men whom she claims might have been the father of the child. The judge in the paternity court orders that all three men, the child, and the mother have blood tests. The results of blod typing are given below:

The mother claims that this proves that Man#3 must be the little girl's father. Is the mother correct? Why or why not?