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

Yes it is possible

Step-by-step 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"