Question

Given below are two statements. Statement I - In the population, every person shows unusual sequences of 20 - 100 base pairs, which are repeated several times and are termed as VNTRs Statement II - VNTRs are same in each individual and hence is the key factor in DNA profiling. In the light of above statements, Select the correct option given below:

• A. Both statement I and statement II are correct.
• B. Both statement I and statement II are incorrect.
• C. Statement I is correct but statement II is incorrect.
• D. Statement I is incorrect but statement II is correct.

Hint:

VNTRs differ from person to person, which is why they are useful in DNA profiling.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
VNTR means variable number of tandem repeats.
They are short sequences of 20-100 base pairs repeated several times.

Step 2: Check Statement I
Every person shows these repeated sequences and the number of repeats varies.
So Statement I is correct.

Step 3: Check Statement II
If VNTRs were the same in all individuals, they could not identify a person.
They are different in each individual, so Statement II is incorrect.

Final Answer:
Statement I is correct and Statement II is incorrect. \[ \boxed{\text{(C) }\text{Statement I is correct but statement II is incorrect.}} \]