Which of the following genetic units moves from one chromosome to another or from one replicon to another and causes genetic changes?

Options

A. Muton
B. Replicon
C. Transposon
D. Cistron

Answer

To solve the question regarding which genetic unit moves from one chromosome to another or from one replicon to another and causes genetic changes, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Options**:
- We have four options: Newton, replicon, transposon, and cistron. We need to analyze each option to determine which one fits the description of moving genetic units.

2. **Defining Each Term**:
- **Newton**: This term is not commonly used in genetics. It may refer to a unit of measurement in physics, but it does not relate to genetic units.
- **Replicon**: This refers to a DNA molecule or sequence that can replicate independently. It does not specifically refer to a unit that moves between chromosomes.
- **Transposon**: This is a segment of DNA that can move from one location to another within the genome. Transposons are known for their ability to jump between different chromosomes or replicons, causing genetic changes.
- **Cistron**: This term is used to describe a segment of DNA that codes for a single polypeptide. It does not imply movement between chromosomes.

3. **Identifying the Correct Answer**:
- Based on the definitions, the only option that describes a genetic unit capable of moving from one chromosome to another and causing genetic changes is **transposon**.

4. **Conclusion**:
- Therefore, the correct answer to the question is **transposon**.