NEET Botany DNA Structure MCQ Question
Consider a diagram showing a DNA double helix with its major and minor grooves labeled. Which of the following statements accurately describes the structure of these grooves in DNA?
The major groove is wider than the minor groove.
The minor groove is wider than the major groove.
Both grooves are of equal width.
Grooves do not exist in the DNA structure.
Correct Answer
Detailed Explanation
The DNA double helix structure has two types of grooves: a major groove that is wider, and a minor groove that is narrower, due to the asymmetrical spacing of the DNA backbone.
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