It is correct to say that the sex of the body is determined by the father and not by the mother. (False/true)

Answer

**Step-by-Step Solution:**

1. **Understanding Chromosomes**:
- Humans have 23 pairs of chromosomes, totaling 46 chromosomes. Among these, the 23rd pair determines the sex of the individual.

2. **Sex Chromosomes**:
- Males have one X and one Y chromosome (XY), while females have two X chromosomes (XX).

3. **Determining Sex**:
- When reproduction occurs, the mother contributes one of her X chromosomes, while the father contributes either an X or a Y chromosome.

4. **Outcomes of Chromosome Donation**:
- If the father donates an X chromosome and the mother donates an X chromosome, the resulting offspring will be female (XX).
- If the father donates a Y chromosome and the mother donates an X chromosome, the resulting offspring will be male (XY).

5. **Conclusion**:
- Since the sex of the offspring is determined by whether the father contributes an X or a Y chromosome, it is correct to say that the sex of the body is determined by the father and not by the mother. Therefore, the statement is **True**.

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