The period in mitosis in which daughter chromosomes separate from each other and get to opposite poles is known as:

Options

A. interphase
B. anaphase
C. metaphase
D. prophase

Answer

To solve the question regarding the period in mitosis when daughter chromosomes separate and move to opposite poles, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Mitosis Phases**: Mitosis is divided into several phases: prophase, metaphase, anaphase, and telophase. Each phase has distinct events that occur.

2. **Identify the Phases**:
- **Prophase**: The nuclear envelope disintegrates, and spindle fibers begin to form.
- **Metaphase**: Chromosomes align at the metaphase plate, and spindle fibers attach to the kinetochores of the chromosomes.
- **Anaphase**: This is the critical phase where the sister chromatids (daughter chromosomes) are pulled apart and move toward opposite poles of the cell.
- **Telophase**: The nuclear envelope re-forms around each set of chromosomes, and the cell prepares to divide.

3. **Focus on the Question**: The question specifically asks for the phase where daughter chromosomes separate and move to opposite poles.

4. **Analyze Each Option**:
- **A. Interphase**: This is not a phase of mitosis; it is the phase where the cell prepares for division.
- **B. Anaphase**: This is the phase where the separation of daughter chromosomes occurs.
- **C. Metaphase**: This phase involves alignment of chromosomes, not separation.
- **D. Prophase**: This phase involves the preparation for chromosome alignment and spindle formation.

5. **Conclusion**: Based on the analysis, the correct answer is **B. Anaphase**. This is the period in mitosis when the daughter chromosomes separate and move to opposite poles.

### Final Answer:
**B. Anaphase**