Assertion : The strength of linkage will be more when the distance between two genes is greater.
Reason : Crossing over will be relatively less frequent.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Explanation

**Step-by-Step Solution:**

1. **Understanding Linkage**: Linkage refers to the tendency of genes that are located close to each other on a chromosome to be inherited together during the meiosis process. The closer the genes are, the stronger the linkage.

2. **Assertion Analysis**: The assertion states that "The strength of linkage will be more when the distance between two genes is greater." This is incorrect because the strength of linkage actually decreases as the distance between two genes increases. When genes are far apart, they are more likely to be separated during crossing over.

3. **Reason Analysis**: The reason provided states that "Crossing over will be relatively less frequent." This is also incorrect. In fact, crossing over is more likely to occur between genes that are farther apart. The greater the distance between two genes, the higher the probability that a crossover event will occur between them.

4. **Conclusion**: Since both the assertion and the reason are incorrect, the correct answer to the question is that both the assertion and the reason are false.

**Final Answer**: Both assertion and reason are false (Option 4).

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