L-shaped chromosomes are also called :

Options

A. Acrocentric
B. Telocentric
C. Sub-metacentric
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding Chromosome Shapes**: Chromosomes can have different shapes based on the position of the centromere. The shapes include metacentric, submetacentric, acrocentric, and telocentric.

2. **Identifying L-shaped Chromosomes**: The question specifically asks for L-shaped chromosomes. To identify which type of chromosome is L-shaped, we need to analyze the options provided.

3. **Evaluating the Options**:
- **Option A: Acrocentric**: Acrocentric chromosomes have the centromere located very close to one end, resulting in one long arm and one very short arm. This does not form an L-shape. Thus, this option is incorrect.
- **Option B: Telocentric**: Telocentric chromosomes have the centromere at one end, leading to a structure that resembles a straight line or an "I" shape, not an L-shape. Therefore, this option is also incorrect.
- **Option C: Submetacentric**: Submetacentric chromosomes have the centromere located slightly off-center, resulting in two arms of unequal length. This configuration creates an L-shape, making this option the correct answer.
- **Option D: None of these**: Since we have identified the correct shape as submetacentric, this option is incorrect.

4. **Conclusion**: Based on the analysis, the correct answer to the question "L-shaped chromosomes are also called:" is **submetacentric**.

**Final Answer**: Submetacentric

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