5 | DNA Double Helix

DNA Double Helix

  • Once joined, the two strands of DNA twist around each other, forming a structure known as a double helix.
  • This resembles a twisted ladder, where the ‘rails’ consist of alternating sugars and phosphates, and the ‘rungs’ consist of base pairs.

 
dna double helix

A DNA molecule has a twisted structure known as a double helix.