Why are GC and AT pairs made in a double helix? Concept introduction: A typlical structure of DNA has double stranded hydrogen bonding which forms a spiral configuration. Both of these strands are in opposite polarity. Purine never binds with another purine as they cannot fulfill the prerequisites of binding.

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Chapter 4, Problem 7P

Interpretation Introduction

Interpretation:

Why are GC and AT pairs made in a double helix?

Concept introduction:

A typlical structure of DNA has double stranded hydrogen bonding which forms a spiral configuration. Both of these strands are in opposite polarity. Purine never binds with another purine as they cannot fulfill the prerequisites of binding.

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