Question

Given below are two statements: Assertion (A): DNA fingerprinting can be carried out with minuscule amount of material. Reason (R): PCR can amplify minute amount of DNA.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• B. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• C. (A) is correct but (R) is not correct
• D. (A) is not correct but (R) is correct

Hint:

PCR is used to amplify small amounts of DNA, which makes DNA fingerprinting possible even from tiny biological samples.

Answer 1

The Correct Option is A

Concept:
DNA fingerprinting is a molecular technique used to identify individuals based on their DNA patterns. PCR plays an important role because it can amplify very small amounts of DNA.

Step 1: Check Assertion (A).
DNA fingerprinting can be carried out using a very small amount of biological material such as blood, hair root, saliva, semen, or tissue. \[ A \text{ is correct} \]

Step 2: Check Reason (R).
PCR stands for Polymerase Chain Reaction. It can amplify minute amounts of DNA into millions of copies. \[ R \text{ is correct} \]

Step 3: Check whether R explains A.
DNA fingerprinting requires enough DNA for analysis. If the available DNA is very small, PCR can amplify it. Therefore, PCR explains why DNA fingerprinting can be done even with a very small amount of material. \[ R \text{ correctly explains } A \] Therefore: \[ \text{Both A and R are correct, and R is the correct explanation of A.} \] \[ \therefore \text{Correct Answer is (A)} \]