Assertion: Synaptonemal complex develops between two synapsed homologous chromosomes.
Rasson : Mitosis cannot be completed without the synaptonemal complex.

Options

A. IF both Assertion & Reason are true and the reason followed is the correct explanation of the assertion then mark (1).
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark (2).
C. If Assertion is true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statement then mark (4).

Answer

To analyze the assertion and reason provided in the question, we will break down the concepts involved step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "the synaptonemal complex develops between two synapsed homologous chromosomes."
- The synaptonemal complex is a protein structure that forms between homologous chromosomes during meiosis, specifically during prophase I.
- This complex facilitates the pairing of homologous chromosomes and is crucial for the process of crossing over, where genetic material is exchanged between non-sister chromatids.

2. **Understanding the Reason**:
- The reason given is that "mitosis cannot be completed without the synaptonemal complex."
- Mitosis is the process of cell division that results in two genetically identical daughter cells from a single parent cell.
- Unlike meiosis, mitosis does not involve the formation of homologous chromosome pairs or the synaptonemal complex. Instead, sister chromatids are separated during anaphase.

3. **Evaluating the Truth of the Assertion**:
- The assertion is true because the synaptonemal complex does indeed develop between synapsed homologous chromosomes during meiosis.

4. **Evaluating the Truth of the Reason**:
- The reason is false because mitosis does not require the synaptonemal complex; it is specific to meiosis and does not play a role in mitotic cell division.

5. **Conclusion**:
- Therefore, the assertion is true, and the reason is false.

### Final Answer:
- Assertion: True
- Reason: False