In mitotic metaphase, each chromosome is

Options

A. One
B. Two
C. Three
D. Four

Answer

To answer the question "In mitotic metaphase, each chromosome is?", we need to analyze the structure of chromosomes during this specific phase of the cell cycle. Here’s a step-by-step breakdown of the solution:

### Step-by-Step Solution:

1. **Understanding Metaphase**:
- Metaphase is a stage in the cell cycle where chromosomes align at the cell's equatorial plane. This alignment is crucial for ensuring that each daughter cell receives an identical set of chromosomes during cell division.

**Hint**: Recall that metaphase is characterized by the alignment of chromosomes at the cell's center.

2. **Structure of Chromosomes**:
- Before metaphase, during the S phase of interphase, each chromosome is replicated. This replication results in two identical copies of each chromosome, known as sister chromatids.

**Hint**: Remember that chromosomes are duplicated during the S phase, leading to sister chromatids.

3. **Role of Centromere**:
- The sister chromatids are joined together at a region called the centromere. This point is essential for the proper segregation of chromosomes during cell division.

**Hint**: The centromere is the point where sister chromatids are held together.

4. **Counting Chromatids**:
- In metaphase, each chromosome consists of two sister chromatids. Therefore, when we refer to a chromosome in metaphase, we are actually referring to the structure that includes both chromatids.

**Hint**: Focus on the fact that each chromosome in metaphase has two chromatids.

5. **Choosing the Correct Option**:
- Given the options (1, 2, 3, 4), the correct answer is that in mitotic metaphase, each chromosome is represented by 2 chromatids.

**Hint**: Look for the option that indicates the number of chromatids per chromosome during metaphase.

### Final Answer:
In mitotic metaphase, each chromosome is **2**.