Assertion :- Telophase leads to formation of diad of cells.
Reason :- During Anaphse is marked by completion of karyokinesis and cytokinesis as well.

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

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that "Telophase leads to the formation of dyad of cells."
- In cell division, telophase is the final stage of mitosis where the chromosomes reach the opposite poles of the cell and begin to de-condense back into chromatin. This phase is crucial for the formation of two distinct nuclei in the daughter cells.

2. **Understanding the Reason:**
- The reason provided is "During Anaphase, it is marked by completion of karyokinesis and cytokinesis as well."
- Anaphase is the stage in mitosis where the sister chromatids are pulled apart towards opposite poles of the cell. Karyokinesis (nuclear division) is not completed during anaphase; it is completed during telophase. Cytokinesis (division of the cytoplasm) typically begins during telophase, not during anaphase.

3. **Evaluating the Truthfulness:**
- The assertion is true because telophase does indeed lead to the formation of two daughter cells (dyads).
- The reason is false because karyokinesis is not completed during anaphase; it is completed during telophase.

4. **Conclusion:**
- Therefore, the assertion is true, but the reason is false.

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

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