The chromosome in which centromere lies slightly away from the middle of the chromosome resulting into one shorter arm, is called as

Options

A. metacentric
B. submetacentric
C. acrocentric
D. telocentric.

Explanation

To answer the question about the type of chromosome in which the centromere lies slightly away from the middle, resulting in one shorter arm, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Chromosome Structure**:
- A chromosome consists of two arms (p arm and q arm) and a centromere that connects them. The position of the centromere determines the classification of the chromosome.

2. **Identifying Chromosome Types**:
- Chromosomes can be classified based on the position of the centromere:
- **Metacentric Chromosome**: The centromere is located in the middle, resulting in two equal-length arms.
- **Submetacentric Chromosome**: The centromere is slightly off-center, leading to one shorter arm (p arm) and one longer arm (q arm).
- **Acrocentric Chromosome**: The centromere is located closer to one end, resulting in one very short arm and one very long arm.
- **Telocentric Chromosome**: The centromere is at the very end of the chromosome, resulting in only one arm.

3. **Analyzing the Given Question**:
- The question specifies that the centromere is "slightly away from the middle," which indicates that one arm will be shorter than the other. This description matches the definition of a submetacentric chromosome.

4. **Selecting the Correct Answer**:
- Based on the definitions and the description provided in the question, the correct answer is **submetacentric chromosome**.

### Final Answer:
The chromosome in which the centromere lies slightly away from the middle, resulting in one shorter arm, is called a **submetacentric chromosome**.

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