Metacentric chromosomes have

Options

A. no arms
B. equal arms
C. unequal arms
D. one arm

Answer

**Step-by-Step Solution:**

1. **Understanding Chromosomes:**
- Chromosomes are structures within cells that contain DNA. They are made up of two sister chromatids joined at a region called the centromere.

2. **Identifying the Centromere:**
- The centromere is the primary constriction point of the chromosome. Its position is crucial in determining the type of chromosome.

3. **Types of Chromosomes Based on Centromere Position:**
- Chromosomes are classified based on the position of the centromere into four main types:
- Metacentric
- Submetacentric
- Acrocentric
- Telocentric

4. **Defining Metacentric Chromosomes:**
- Metacentric chromosomes have their centromere located at the center. This means that the two arms of the chromosome (the sections on either side of the centromere) are of equal length.

5. **Conclusion:**
- Therefore, metacentric chromosomes have equal arms.

**Final Answer:**
- Metacentric chromosomes have equal arms.

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