Question

In the ABO blood system in human beings alleles a,b are codominant and both are dominant to c alleges. in a paternity dispute, type ab woman claimed that one of the four men was the father of her type a child. which of the following men could be the father of the child on the basic of the evidence given/
a) type A
b) type B
c) type O
d) typre AB

Answer 1

Answer:

c) type O

The woman has AB type blood group which means, gametes will be carrying the alleles of type A or B blood group and if the father has type O blood group the gametes will be carrying the gene which is recessive to both A and B.

It clearly refers to the child's blood group being either A or B.

Hence, c) type O is the correct option.