Use the Punnett square from the introduction and the ones you drew for Part A to select the three statements that are true about the inheritance of this form of deafness.
If a deaf man and a hearing woman have a deaf child, the mother's genotype must be
Dd.
The child of a deaf man and a DD hearing woman will definitely have hearing.
If the first two children from Dd parents are deaf, there is no risk that their next child will
also be deaf.
If a deaf child is born to hearing parents, both parents must be Dd.
The child of a Dd father and Dd mother has a 50% chance of having hearing.