Question

State true or false. Mother contributes only ‘X’ chromosome while father can contribute either ‘X’ or ‘Y’ chromosome and hence decides the sex of the baby.

• A. True
• B. False

Answer 1

The correct option is A True

Human males have 44 + XY chromosome in their cells so they can produce 22 + X or 22 + Y chromosomes as gametes and females have 44 + XX chromosomes they can only produce 22 + X chromosomes as the only gametes.