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Watson and Crick proposed that DNA consists of two strands twisted into a:

ARolled thin tube
BRight handed helix
CRight angled ladder
DRound flat sheet
Answer & Solution
Correct answer: B. Right handed helix
1. The two strands wind around a common axis. 2. The twist goes one particular way. 3. It is a right handed helix. _Source: OpenStax Biology 2e, Chapter 14, DNA Structure and Function._
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