Botany-DNA Structure
NEET Botany DNA Structure MCQ Question
Type: MCQ-numerical-Easy-Class 12
If the length of E. coli DNA is 1.36 mm, what is the approximate number of base pairs (bp) in its DNA, given that the distance between two consecutive base pairs is 0.34 nm?
A
4.0 × 10^6 bp
B
3.6 × 10^6 bp
C
4.5 × 10^6 bp
D
3.2 × 10^6 bp
Correct Answer
Option A
Detailed Explanation
To find the number of base pairs in E. coli DNA, divide the total length of the DNA (1.36 mm = 1.36 × 10^6 nm) by the distance between two consecutive base pairs (0.34 nm). This calculation gives approximately 4.0 × 10^6 bp.
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