Metachromosome with medial centromere and equal arms is

Options

A. Telocentric
B. Acrocentric
C. Metacentric
D. Submetacentric

Answer

To solve the question regarding the type of chromosome described as "metachromosome with medial centromere and equal arms," we will analyze the options provided one by one.

### Step-by-Step Solution:

1. **Understanding the Terminology**:
- The term "metachromosome" refers to a chromosome that has a centromere located in the middle, resulting in two arms of equal length.
- "Medial centromere" indicates that the centromere is positioned centrally.

2. **Analyzing the Options**:
- **Option A: Telocentric**:
- In telocentric chromosomes, the centromere is located at one end, resulting in one long arm and one short arm. This does not match the description of having equal arms.
- **Conclusion**: Incorrect.

- **Option B: Acrocentric**:
- Acrocentric chromosomes have the centromere located closer to one end, leading to one long arm and one very short arm. Again, this does not fit the description of equal arms.
- **Conclusion**: Incorrect.

- **Option C: Metacentric**:
- Metacentric chromosomes have the centromere located at the center, resulting in two arms of equal length. This matches the description given in the question perfectly.
- **Conclusion**: Correct.

- **Option D: Submetacentric**:
- Submetacentric chromosomes have the centromere located slightly off-center, resulting in arms of unequal length. This does not fit the description of having equal arms.
- **Conclusion**: Incorrect.

3. **Final Answer**:
- Based on the analysis, the correct answer is **Option C: Metacentric**.