Assertion: Drosophila melanogaster is widely used in genetic research.
Reason: Drosophila melanogaster is a readily available insect. a) If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion. b) If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion. c) If Assertion is true but the Reason is false. d) If both Assertion and Reason are false.

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.
C. If Assertion is true but the Reason is false.
D. If both Assertion and Reason are false.

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step 1: Analyze the Assertion
The assertion states that "Drosophila melanogaster is widely used in genetic research."
- This statement is **true**. Drosophila melanogaster, commonly known as the fruit fly, has been a model organism in genetics for over a century. Its genetic makeup is well understood, and it has been instrumental in many genetic discoveries.

### Step 2: Analyze the Reason
The reason states that "Drosophila melanogaster is a readily available insect."
- This statement is also **true**. Drosophila is easy to culture in the laboratory and is widely available for research purposes.

### Step 3: Determine the Relationship Between Assertion and Reason
Now we need to determine if the reason provided is the correct explanation for the assertion.
- While both statements are true, the reason that Drosophila is "readily available" does not fully explain why it is widely used in genetic research. There are other significant reasons, such as its short generation time, the simplicity of its genetic structure, and the relevance of its genes to human diseases.

### Conclusion
Since both the assertion and the reason are true, but the reason does not correctly explain the assertion, the correct answer is:
**b) If both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion.**

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