Frequency of crossing over occurring between two gene located on the same chromosome depends up

Options

A. Length of chromosome
B. Position of centromere
C. Activities of two genes
D. Distance between two genes

Answer

**Step-by-Step Solution:**

1. **Understanding Crossing Over**:
- Crossing over is a genetic process that occurs during meiosis where homologous chromosomes exchange segments of their genetic material. This process is crucial for genetic variation.

2. **Identifying Factors Affecting Crossing Over**:
- The frequency of crossing over can be influenced by several factors, including the length of the chromosome, the position of the centromere, the activities of the genes, and importantly, the distance between the two genes on the same chromosome.

3. **Analyzing the Distance Between Genes**:
- The distance between two genes on the same chromosome is a key factor. When two genes are located close to each other, the likelihood of crossing over occurring between them is higher. Conversely, if the genes are far apart, the chance of crossing over occurring between them decreases.

4. **Conclusion**:
- Therefore, the frequency of crossing over between two genes located on the same chromosome primarily depends on the distance between those two genes. The closer the genes are, the higher the frequency of crossing over.

**Final Answer**: The frequency of crossing over occurring between two genes located on the same chromosome depends upon the distance between the two genes.

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