Nucleic Acid BP

• Name the major differences for adenine

  1' Position - N

  6' Position - NH2
• Name the major differences for guanine

  1' Position - NH

  2' Position - NH2

  6' Position =O (double bonded O2)
• Purines have two RINGS and pyrimidines have one RING
• What base pairs are considered purines?

  Adenine and Guanine
• What are the major differences in cytosine?

  4' Position - NH2
• What are the major differences in thymine?

  5' Position - Methyl
• What makes uracil unique?

  • Used for RNA only
  • Draw a Thymine but no methyl group
• What base is this?

  Uracil

  
• What base is this?

  Thymine

  
• What base is this?

  Cytosine

  
• What base is this?

  Adenine

  
• What base is this?

  Guanine

  
• Which bases are considered pyrimidines?

  Cytosine, thymine, and uracil