Mutations

• Mutations

  Mistake in genetic code.
• Mutagen

  Factor that triggers mutations
• Single gene mutation

  Alteration of a single DNA nucleotide.
• Substitution

  A gene is replaced.

  
• Insertion

  A gene is added

  
• Deletion

  A gene or more is removed

  
• Chromosome structure mutations

  Alterations that affect whole chromosomes and whole genes.
• Inversion

  A section of the chromosome is reversed

  
• Duplication

  A section of the gene is copied and inserted into the chromosome.

  
• Remember to highlight or circle the section/gene you have mutated during your exam.