Question

Consider the following information and answer the question that follows:

Reshma’s mother is normal, but her father is suffering from PKU. Reshma is suffering from PKU. She has two younger brothers who are identical twins; both are suffering from PKU. Reshma’s two elder sisters are normal. Reshma marries Robert, who is normal. Reshma gives birth to a son named Jason who is normal. After some time, Reshma and Robert have two more children: a daughter with symptoms of PKU and a son without any symptoms of PKU.

Make a single pedigree chart using the above information to show the pattern of inheritance of phenylketonuria (PKU) in the family of Reshma.

Answer 1