Question

4. A boy with blood type B finds out that his mom's blood type is B and his dad's
blood type is AB. He is worried that his dad might not be his biological father
since they don't have the same blood type. Is it possible for a mom with B
blood and a dad with AB blood to have a son who is B? Explain and show
your understanding.​

Answer 1

Answer:

Yes it is possible

Explanation:

If we take the mothers group as IO    IB

and the father as IA     IB

           IA         IB

 IO     IOIA     IOIB

 IB     IAIB       IBIB

This way we are getting 50% chance of a child being group "B"