Mutations video (infinity learn)

• Mutation


  Sudden and abrupt changes to the genetic material of organisms
• Mutation doesn't lead to drastic changes in humans, rather most mutations give rise to concern and result in undesirable changes
• Genetic mutation


  Mutation that affects the DNA or the genes or sometimes the complete chromosomes
• Genetic mutation


  1. Change in a single nucleotide

  2. Entire codon changes

  3. Reading frame changes

  4. Altered protein produced
• Chromosomal mutation


  Mutation that involves changes in the structure or number of chromosomes
• Chromosomal mutation types


  • Deletion - part of chromosome physically removed
  • Duplication - part of chromosome duplicated
  • Inversion - part of chromosome flipped
  • Insertion - part of one chromosome inserted into another
  • Translocation - segment from each chromosome interexchanged
• Chromosomal aberrations


  Mutations resulting in disruption of normal chromosomal structures
• Aneuploidy


  Mutation involving change in the number of chromosomes
• Factors that cause mutations include radiation, chemicals, and certain consumable items