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The M-phase starts with the :...

The M-phase starts with the :

A

`G_(1)`

B

Karyokinesis

C

Cytokinesis

D

Telophase

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the M-phase:** The M-phase, or mitotic phase, is the stage of the cell cycle where cell division occurs. It includes both karyokinesis (nuclear division) and cytokinesis (cytoplasmic division). 2. **Evaluating the Options:** - **Option 1: G1 phase** - This is the first gap phase after mitosis where the cell grows and synthesizes proteins. This does not start the M-phase, so this option is incorrect. - **Option 2: Karyokinesis** - This is the process of nuclear division that occurs during the M-phase. It is the first step in the M-phase, making this option correct. - **Option 3: Cytokinesis** - This is the division of the cytoplasm that follows karyokinesis. Since it occurs after karyokinesis, this option is incorrect. - **Option 4: Telophase** - This is the final stage of karyokinesis where the nuclear membrane reappears. Since it occurs after karyokinesis, this option is also incorrect. 3. **Conclusion:** The M-phase starts with karyokinesis, which is the correct answer. **Final Answer:** The M-phase starts with karyokinesis. ---
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