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Bio 6E

Changes in DNA

TermDefinition
Point Mutation A mutation that changes only one small area or one nucleotide in a gene
Frameshift Mutation A mutation that occurs when the number of nucleotides inserted or deleted causes a misreading of amino acids from that point
Insertion A mutation in which extra base pair(s) is added to sequence
Substitution Mutation A mutation that exchanges one base for another
Silent Mutation This mutation does not change anything
Deletion A mutation where section of DNA is lost
Nonsense Mutation This mutation changes a codon that specifies an amino acid to one of the STOP codons
Missense Mutation This mutation alters the codon so as to produce an altered amino acid in the protein product
Translocation This mutation base pairs or sections of chromosome are flipped.
Inversion This mutation results in a transfer of a piece of one chromosome to a nonhomologous chromosome.
Duplication Section of the gene is doubled
Nondisjunction The failure of homologous chromosomes to separate normally during nuclear division.
Created by: tneal1