Ch 21

• Genome


  all the genetic material and organism contains

  in humans this is DNA in the nucleus and mitochondria
• Exons


  Genes that code for proteins ~ 2% of your DNA
• Introns


  Non coding regions of DNA that are removed from mRNA before translation
• Why is Taq polymerase used


  Obtained from thermophilic bacteria in hot springs so will denature under high temperatures
• What is epigenetics


  The term used to describe the control of gene expression via DNA modification
• What is an operon

  A group of genes under the control of the same regulatory mechanism and are expressed simultaneously