Question

"In human beings the genes inherited from the parents decide whether the newborn individual is male or female." Explain this statement with the help of a flow diagram.

Hint:

The combination of sex chromosomes (XX or XY) inherited from the parents determines the biological sex of the offspring.

Answer 1

Human sex determination relies on sex chromosomes. Males possess XY chromosomes, while females have XX. The father contributes either an X or Y chromosome; the mother contributes an X.
A child inheriting an X from both parents is female (XX).
An X from the mother and a Y from the father results in a male (XY). Thus, parental genes (X and Y chromosomes) dictate the child's sex.