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Two genes situated very close on the chr...

Two genes situated very close on the chromosome show

A

High crossing over is detected

B

No crossing over

C

Only double cross over can occur

D

one crossing over

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding Genetic Linkage**: - Genes that are located close to each other on the same chromosome tend to be inherited together. This phenomenon is known as genetic linkage. 2. **Effect of Proximity on Crossing Over**: - When two genes are situated very close to each other, the likelihood of crossing over occurring between them is significantly reduced. Crossing over is the process where homologous chromosomes exchange segments during meiosis. 3. **High Linkage, Low Crossing Over**: - Because the genes are closely linked, they will show high genetic linkage, meaning they are often inherited together. However, this proximity results in very few instances of crossing over between them. 4. **Conclusion**: - Therefore, when two genes are very close on a chromosome, it can be concluded that there will be no crossing over detected between them. The correct answer to the question is that there will be "no crossing over detected". ### Final Answer: - Two genes situated very close on the chromosome show **no crossing over detected**. ---
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