A chromosome having subterminal centromere is

Options

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

Answer

To determine which type of chromosome has a subterminal centromere, we need to analyze the definitions of the various types of chromosomes provided in the question.

### Step-by-Step Solution:

1. **Understand the Types of Chromosomes**:
- **Acrocentric Chromosome**: This type has the centromere located near one end of the chromosome. This means that one arm is significantly longer than the other.
- **Submetacentric Chromosome**: In this type, the centromere is slightly off-center, resulting in two arms of unequal length, but not as extreme as in acrocentric chromosomes.
- **Telocentric Chromosome**: Here, the centromere is located at the very end of the chromosome, making one arm essentially nonexistent.
- **Metacentric Chromosome**: This type has the centromere located at the center, resulting in two equal-length arms.

2. **Identify the Definition of Subterminal Centromere**:
- A subterminal centromere is one that is located near the end of the chromosome but not at the very end. This means it is slightly away from the terminal end.

3. **Match the Definition to the Chromosome Types**:
- The acrocentric chromosome has its centromere near one end, which aligns with the definition of subterminal.
- The submetacentric chromosome has its centromere slightly off-center, which does not fit the definition of subterminal.
- The telocentric chromosome has its centromere at the terminal end, which does not fit the definition of subterminal.
- The metacentric chromosome has its centromere in the center, which also does not fit.

4. **Conclusion**:
- Based on the definitions, the chromosome that has a subterminal centromere is the **Acrocentric Chromosome**.

### Final Answer:
A chromosome having a subterminal centromere is **Acrocentric**.

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