The width of a DNA double helix ____.
A) is constant
B) is narrower where adenine is present than where cytosine is present
C) is wider where purines are present than where pyrimidines are present
D) varies randomly
E) is wider where pyrimidines are present than where purines are present

Question

Quizplus · Accepted Answer

The width of a DNA double helix is constant because the structure always pairs a purine (adenine or guanine) with a pyrimidine (cytosine or thymine), maintaining a consistent width throughout its length.

The Width of a DNA Double Helix ____