The mechanism that causes a gene to move from one linkage group to another is called :

Options

A. inversion
B. duplication
C. translocation
D. crossing over

Answer

To solve the question "The mechanism that causes a gene to move from one linkage group to another is called:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand Linkage Groups**: Linkage groups refer to a set of genes that are located on the same chromosome and tend to be inherited together.

2. **Identify Genetic Mechanisms**: There are several mechanisms that can affect the arrangement of genes on chromosomes, including:
- Inversion
- Duplication
- Translocation
- Crossing Over

3. **Analyze Each Mechanism**:
- **Inversion**: This occurs when a segment of a chromosome is reversed end to end. It does not cause genes to move to different linkage groups.
- **Duplication**: This involves a segment of the chromosome being duplicated, resulting in extra copies of genes. This also does not cause movement between linkage groups.
- **Translocation**: This is the process where segments of chromosomes break off and attach to different chromosomes. This can cause genes to move from one linkage group to another.
- **Crossing Over**: This occurs during meiosis where homologous chromosomes exchange segments. While it can rearrange genes, it typically does not result in movement between different linkage groups.

4. **Conclusion**: Based on the analysis, the mechanism that specifically causes a gene to move from one linkage group to another is **Translocation**.

### Final Answer:
The mechanism that causes a gene to move from one linkage group to another is called **Translocation**.

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