Structure of DNA

• The genome of an organism is all of the genetic imformation stored in DNA


  Genome
• Molecular structure of DNA

  Polymer: small molecules joined together
• Nucleotide


  Singular unit of DNA
• Deoxyribose sugar and phosphate


  Part of a nucleotide; link to form backbone through covalent bonding
• Nitrogen base

  G pairs with C

  A pairs with T

  Face inward
• Complementary base pairing

  Double helix molecules: 2 strands of DNA polymer (run anti-parallel)
• Chromosome 


  Distinct sequence of nucleotides that code for specific genes