• Uses deoxyribose instead of ribose
  • Lacks extra O on 2’ carbon
• More expensive to create than RNA
  • DNA uses thymine instead of uracil
    • Cytosine can degrade into uracil, more likely over longer time
    • DNA can remove all uracil, since it only uses thymine
• DNA can compact to varying degrees
  • Used to store DNA in a tiny nucleus
  • Most condensed form forms a chromosome
• For mitosis, copy all DNA and split to two cells
  • Requires fully condensed DNA
• Is transcribed into RNA
  • Transcription happens in nucleus
  • Matching bases link to create RNA strand
  • Can have multiple genes to create different RNA
    • Genes have regulatory and coding regions
• Cells in the body contain DNA
  • All DNA in the body came from one original copy
  • Replicated during cell cycle