Chromosomes with terminal centromeres are known as

Options

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

Answer

To solve the question "Chromosomes with terminal centromeres are known as," we need to analyze the different types of chromosomes based on the position of their centromeres. Here’s a step-by-step breakdown:

### Step 1: Understand the Types of Chromosomes
1. **Metacentric Chromosomes**: These chromosomes have the centromere located in the middle, resulting in two equal arms.
- **Hint**: Remember that metacentric means "middle centromere."

2. **Submetacentric Chromosomes**: These have the centromere slightly off-center, leading to one arm being slightly longer than the other.
- **Hint**: Think of "sub" as slightly below the center.

3. **Acrocentric Chromosomes**: In these chromosomes, the centromere is located closer to one end, resulting in one very short arm and one long arm. This is the key type we are looking for.
- **Hint**: "Acro" means "tip" or "end," indicating the centromere is near the end.

4. **Telocentric Chromosomes**: These have the centromere located at one of the terminal ends of the chromosome.
- **Hint**: "Telo" refers to the end, similar to acrocentric but specifically at the end.

### Step 2: Identify the Correct Answer
From the definitions:
- **Metacentric** and **Submetacentric** do not have terminal centromeres.
- **Telocentric** does have a centromere at the terminal end but is specifically defined as being at one end.
- **Acrocentric** chromosomes have centromeres that are near the end but not exactly at the terminal position.

### Final Answer
The correct answer to the question "Chromosomes with terminal centromeres are known as" is **Telocentric Chromosomes**.

### Summary of Steps
1. Identify the types of chromosomes based on centromere position.
2. Analyze each option to determine which has terminal centromeres.
3. Conclude that telocentric chromosomes have centromeres at the terminal ends.