Question

Study the pedigree chart given below

What does it show?

• A. Inheritance of a sex-linked inborn erro of metabolism like phenylketonuria
• B. Inheritance of a condition like phenylketonuria as an autosomal recessive trait
• C. The pedigree chart is wrong as this is not possible
• D. Inheritance of a recessive sex-linked disease like haemophilia

Answer 1

The correct option is D Inheritance of a recessive sex-linked disease like haemophilia

The given pedigree analysis shows inheritance 0of a recessive sex-linked disease like haemophilia. In this disease, the gene causing haemophilia goes to son from mother and to daughter from the father.