1.DNA

• DNA stored in eukaryotic cells:

  • long, linear and associated with histone proteins
  • Exist as chromosomes in nucleus
  • Histone proteins support DNA and coiled tightly into chromosome
• DNA stored in eukaryotic cells for mitochondria and chloroplast:

  • mitochondria and chloroplast have their own DNA
  • Short, circular and no associated proteins
• DNA stored in prokaryotic cells:

  • Carry DNA as short, circular chromosomes
  • contains no histones
  • Condenses by supercoiling to fit cell
• what are Triplets / codons?

  Sequence of 3 DNA bases (triplet)codes for specific amino acids