Botany-(general)
NEET Botany (general) MCQ Question
Type: MCQ-numerical-Medium-Class 12
If a DNA molecule has a total length of 3.4 micrometers, approximately how many base pairs does it contain?
A
10,000 base pairs
B
1,000 base pairs
C
100,000 base pairs
D
34,000 base pairs
Correct Answer
Option D
Detailed Explanation
The NCERT context states that there are roughly 10 base pairs in every 3.4 nanometers (or 0.0000034 meters) of DNA. Thus, 3.4 micrometers (or 0.0000034 meters) contains approximately 10,000 base pairs, calculated as (3.4 micrometers / 0.34 nanometers) * 10 base pairs.
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