The chromosomes can be divided based on the position of the centromere. A certain chromosomes appears 'L' shaped during the anaphase stage and has centromere slightly away from the middle of the chromosome. Such a chromosome will be

Options

A. Metacentric
B. Sub - metacentric
C. Acrocentric
D. Telocentric

Answer

To solve the question regarding the classification of chromosomes based on the position of the centromere, we can follow these steps:

### Step 1: Understand the Structure of Chromosomes
Chromosomes are structures made of DNA and proteins that carry genetic information. Each chromosome has a centromere, which is the region where the two sister chromatids are joined.

**Hint:** Remember that the centromere is the primary constriction point of the chromosome.

### Step 2: Identify the Types of Chromosomes Based on Centromere Position
Chromosomes can be classified into four types based on the position of the centromere:
- **Metacentric**: Centromere is located in the middle, resulting in two equal arms.
- **Submetacentric**: Centromere is slightly off-center, resulting in one arm being longer than the other.
- **Acrocentric**: Centromere is located closer to one end, resulting in one very short arm and one long arm.
- **Telocentric**: Centromere is located at the very end of the chromosome, resulting in only one arm.

**Hint:** Visualize the chromosome shapes to differentiate between the types based on centromere position.

### Step 3: Analyze the Given Information
The question states that the chromosome appears 'L' shaped during anaphase and has a centromere slightly away from the middle. The 'L' shape indicates that one arm is longer than the other, which suggests that the centromere is not in the middle.

**Hint:** The 'L' shape indicates an asymmetrical distribution of chromosome arms.

### Step 4: Determine the Correct Classification
Since the centromere is described as being "slightly away from the middle," this fits the definition of a **submetacentric** chromosome. In this case, one arm is longer than the other, which corresponds to the 'L' shape observed during anaphase.

**Hint:** Focus on the description of the centromere's position to classify the chromosome correctly.

### Step 5: Conclusion
Based on the analysis, the correct answer to the question is that the chromosome is **submetacentric**.

**Final Answer:** Option B - Submetacentric