![Section of DNA - Double Helix © Public Domain](https://www.discoveringgalapagos.org.uk/wp-content/uploads/2014/02/Double-Helix-Public-Domain-615x350.jpg)
Section of DNA showing a Double Helix © Public Domain
A double helix is the shape that DNA molecules form when they come together to make a gene. Two spiral strands are connected by molecular linkages.
Double helix features on these pages:
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