Inheritance, variation and evolution

• DNA


  A polymer made up of repeating units (nucleotides) twisting to form a double helix
• Components of a nucleotide

  • Phosphate
  • Base
  • Sugar
• The bases in DNA are A, T, C, G
• Gene


  A small section of DNA on a chromosome that codes for a particular sequence of amino acids to make a specific protein
• Genome


  The entire genetic material of an organism