The M-phase starts with (a)_____ corresponding to separation of daughter chromosomes and usually ends with division of cytoplasm called (b)_____

Answer

To answer the question regarding the M-phase of the cell cycle, we will break it down into two parts:

1. **Identifying what the M-phase starts with**:
- The M-phase, also known as the mitotic phase, begins with the process of nuclear division. This is the phase where the genetic material is separated into two daughter nuclei. This process is specifically referred to as **karyokinesis**.

2. **Identifying what the M-phase ends with**:
- The M-phase concludes with the division of the cytoplasm, which is the final step in cell division. This process is known as **cytokinesis**. It ensures that the two daughter cells are formed, each containing a nucleus and a portion of the cytoplasm.

Putting it all together, we can fill in the blanks:
(a) nuclear division
(b) cytokinesis

### Final Answer:
(a) nuclear division
(b) cytokinesis

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