types of gene mutations

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Last updated 1:34 PM on 6/10/26
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6 Terms

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mutation definition

  • changes in sequence of nucleotides in DNA

2
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insertion/deletion mutation

  • when one or more nucleotide are inserted/deleted from sequence

  • frameshift: alters the sequence after insertion/deletion.

3
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point mutation

  • one base pair replaced by another

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nonsense mutation

  • adds a stop codon, translation stops

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missense mutation

  • nucleotide change alters codon = codes for a diff AA.

  • alters tertiary structure

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silent mutation

  • codon change that doesn't affect AA

  • could be due to degenerate nature

  • leaves primary structure unchanged