Singapore GCE A-Level Exam

What is the structure of DNA according to the Watson-Crick model?

A single-stranded helix A double helix with antiparallel strands connected by complementary base pairing (A-T, G-C) through hydrogen bonds A triple-stranded structure A circular ring structure

Correct Answer:

A double helix with antiparallel strands connected by complementary base pairing (A-T, G-C) through hydrogen bonds

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