Mutations

    Cards (9)

    • the base sequence of a gene determines the amino acid sequence of a protein
    • what happens all the time?
      mutations
    • what is mutation?

      A change in the DNA sequence.
    • what is a variation?
      the differences that exist between individuals of a species
    • how to know when mutation occured?
      a single base will change
    • why changing a single base doesn't change the whole AMAC sequence?
      different base triplets can sometimes encode for the same amino acid
    • mutations mostly have no effect on the function of the protein
    • what happens when a mutation changes the shape of protein?
      enzyme may no longer fit the substrate binding site or a structural protein may lose its strength.
    • what is the role for non-coding parts of DNA?
      can switch genes on and off so variations in these areas of DNA may affect how genes are expressed
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