Botany-DNA Structure
NEET Botany DNA Structure MCQ Question
Type: MCQ-diagram based-Easy-Class 12
Consider a diagram showing a DNA double helix with two strands labeled. One strand is marked with a 3' end at the top and a 5' end at the bottom, while the opposite strand is marked with a 5' end at the top and a 3' end at the bottom. Which statement about these strands is correct?
A
The strand with 3' to 5' polarity is the template strand during transcription.
B
The strand with 5' to 3' polarity is the template strand during transcription.
C
Both strands serve as templates during transcription.
D
Neither strand serves as a template during transcription.
Correct Answer
Option A
Detailed Explanation
As per the NCERT context, the strand with 3' to 5' polarity acts as the template strand because RNA polymerase catalyzes polymerization in the 5' to 3' direction.
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