Assertion :- Male and female ratio is almost equal in this world.
Reason male and felmale genotype is XY and XX.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that the male and female ratio is almost equal in the world.
- To evaluate this, we can refer to global population statistics. According to the 2021 census, the male-to-female ratio is approximately 101 males for every 100 females, indicating that the ratio is indeed close to equal.

2. **Understanding the Reason**:
- The reason provided is that the male and female genotypes are XY and XX, respectively.
- In humans, males have one X and one Y chromosome (XY), while females have two X chromosomes (XX). This genetic difference is fundamental to determining biological sex.

3. **Evaluating the Truth of the Statements**:
- Both the assertion and the reason are true statements. The male-to-female ratio is nearly equal, and the genotypes for males and females are correctly stated as XY and XX.

4. **Assessing the Relationship Between Assertion and Reason**:
- Although both statements are true, the reason does not explain why the male and female ratio is almost equal. The ratio is influenced by various factors such as birth rates, mortality rates, and societal factors, rather than simply the genetic makeup.

5. **Conclusion**:
- Therefore, the assertion is true, the reason is true, but the reason does not correctly explain the assertion.

### Final Answer:
- Assertion: True
- Reason: True
- Relationship: Reason is not a correct explanation of the assertion.