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A permanent change in the gene's DNA sequence. Gene mutations involving one or a few nuckeotides is called point mutation. If a nucleotide is added or deleted, the bases are still read in groups of three, but now those groupings are shifted for every codon that follows. This is called frameshift mutation. Your welcome. (:

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13y ago

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a point mutation

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15y ago
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Q: What is a mutation in a gene?
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