Key term for OCR GCSE Biology A, used in Inheritance.
The 3D physical structure of DNA, consisting of two strands winding around each other like a twisted ladder.
Double helix appears in OCR GCSE Biology A revision content for Genes, inheritance and selection, especially Inheritance and Development of genetics.
Genes, inheritance and selection
Inheritance • Development of genetics
Cell level systems
Cellular processes • Nucleotides
Cell level systems
Cellular processes • DNA structure
Cell level systems
Cellular processes • DNA as a polymer
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