Question Detail
Question
The relative size of the length between the two strands in alpha helix structure of DNA is:
Correct Answer
Option A is the correct answer.
Detailed Explanation
The diameter (width) of the DNA double helix is approximately 2 nanometers (nm). The distance between base pairs along the axis is 0.34 nm. The question asks for the length between the two strands, which is the diameter.
Hint
This is the width of the twisted ladder.