Question

In human beings, the probability of getting a male or a female child is 50%. Explain with the help of a flow diagram only.

Answer 1

The probability of having a male or female child in humans depends on the combination of sex chromosomes. Males have XY chromosomes, and females have XX chromosomes. The sex of the child is determined by the sperm carrying either an X or Y chromosome. The flow diagram is as follows:
\[\text{Father (XY)} \xrightarrow{\text{Sperm}} \text{X or Y}\]
\[\text{Mother (XX)} \xrightarrow{\text{Egg}} \text{X}\]
Possible combinations:
\[\text{XY (Male)} \quad \text{or} \quad \text{XX (Female)}\]
Thus, the probability of having a male or female child is 50%.