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Assertion : The mechanism of DNA replica...

Assertion : The mechanism of DNA replication is semi-conservative in nature.
Reason : Each of the complementary strands of the parental double helix is conserved during the process.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

if both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding DNA Replication**: - DNA replication is the process by which a cell duplicates its DNA before cell division. This ensures that each daughter cell receives an identical copy of the DNA. 2. **Definition of Semi-Conservative Replication**: - The term "semi-conservative" refers to the mechanism of DNA replication where each of the two resulting DNA molecules consists of one original (parental) strand and one newly synthesized strand. 3. **Assertion Analysis**: - The assertion states that the mechanism of DNA replication is semi-conservative in nature. This is true because during replication, the double helix unwinds, and each strand serves as a template for the formation of a new complementary strand. 4. **Reason Analysis**: - The reason provided states that each of the complementary strands of the parental double helix is conserved during the process. This is also true because one strand from the original DNA molecule remains intact in each of the daughter DNA molecules. 5. **Linking Assertion and Reason**: - The reason explains the assertion because the conservation of the parental strand is what defines the semi-conservative nature of DNA replication. Therefore, the reason supports the assertion. 6. **Conclusion**: - Both the assertion and reason are true, and the reason correctly explains the assertion. Thus, the correct answer is that both the assertion and reason are true and the reason is the correct explanation for the assertion. ### Final Answer: - **Option A**: Both assertion and reason are true, and the reason is the correct explanation for the assertion.
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