DNA

• A goes with T
• C goes with G
• A goes with T
• C goes with G
• DNA is a double helix of paired bases.
• What shape is DNA?

  Double helix
• DNA nucleotides are made up of a phosphate, a sugar and a base (one of A, T, C, G).
• DNA is a polymer.
• The pairs of bases are called complimentary base pairings.
• Polymers are complex molecules composed of long chains of monomers.