Which of the below is true regarding DNA structure?
Understand the Problem
The question is asking which statement regarding DNA structure is true among the provided options.
Answer
The sugar-phosphate backbone is on the outside of the DNA double helix.
The sugar-phosphate backbone is on the outside of the double helix with the bases inside.
Answer for screen readers
The sugar-phosphate backbone is on the outside of the double helix with the bases inside.
More Information
DNA's structure is stabilized by the sugar-phosphate backbone on the outside, forming the double helix, with the base pairs on the inside.
Tips
A common mistake is thinking the bases stick outward; they are actually inside the helix.
Sources
- The Structure and Function of DNA - Molecular Biology of the Cell - ncbi.nlm.nih.gov
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