The `%` of crossing over between two gene is 10. what is the gene distance between two gene

Options

A. 20 mu
B. 50 mu
C. 10 mu
D. 5 mu

Answer

To solve the question regarding the gene distance between two genes based on the percentage of crossing over, follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Crossing Over**:
- Crossing over is a process that occurs during meiosis where homologous chromosomes exchange genetic material. The percentage of crossing over between two genes indicates how often they are inherited together.

2. **Identify the Given Information**:
- The percentage of crossing over between the two genes (let's call them Gene A and Gene B) is given as 10%.

3. **Relate Crossing Over to Gene Distance**:
- The distance between two genes on a chromosome can be measured in map units (MU). One map unit is defined as a 1% recombination frequency (crossing over percentage).

4. **Convert Percentage to Map Units**:
- Since the percentage of crossing over is 10%, this directly translates to gene distance in map units. Therefore, if the crossing over percentage is X%, then the gene distance is also X MU.

5. **Calculate the Gene Distance**:
- Given that the crossing over percentage is 10%, the gene distance between Gene A and Gene B is:
\[ \text{Gene Distance} = 10\% = 10 \text{ MU} \]

6. **Conclusion**:
- The gene distance between the two genes is 10 MU.

### Final Answer:
The gene distance between the two genes is **10 MU**.

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