Assertion :- Segregation of genes take place during anaphase-II
Reason:- Anaphase-II is associated with separation of homologous chromosomes

Options

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

Answer

To solve the question, we need to analyze both the assertion and the reason provided, and determine their validity.

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states: "Segregation of genes takes place during anaphase-II."
- In the context of meiosis, anaphase-II is the stage where sister chromatids are separated. However, the segregation of genes (which refers to the separation of alleles of a gene) actually occurs during anaphase-I when homologous chromosomes are separated. Therefore, this assertion is **false**.

2. **Understanding the Reason:**
- The reason states: "Anaphase-II is associated with separation of homologous chromosomes."
- In meiosis, anaphase-I is the stage where homologous chromosomes are separated. In anaphase-II, it is the sister chromatids that are separated, not the homologous chromosomes. Therefore, this reason is also **false**.

3. **Evaluating the Options:**
- Now that we have established that both the assertion and the reason are false, we can evaluate the provided options:
- Option 1: Both assertion and reason are true, and reason is the correct explanation of assertion. **(False)**
- Option 2: Both reason and assertion are true, but reason is not the correct explanation of assertion. **(False)**
- Option 3: Both reason and assertion are true, but reason is false. **(False)**
- Option 4: Both the assertion and reason are false. **(True)**

4. **Conclusion:**
- The correct answer is **Option 4: Both the assertion and reason are false.**