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mutat. mutandis
mutat. mutand.
nonsense mutation
(genetics) A point mutation that generates either a premature stop codon, or a codon that does not specify any amino acid.
frameshift mutation
(genetics) A genetic mutation that either inserts or deletes a number of nucleotides that is not divisible by three (i.e., a non-integer number of codons), altering the reading frame of the portion of the gene downstream of the mutation and causing it to code for a completely different protein sequence.
nasal mutation
An alteration of the initial consonant of a word which occurs in certain Celtic languages under particular linguistic circumstances.
soft mutation
(linguistics) An alteration of the initial consonant of a word which occurs in certain Celtic languages under particular linguistic circumstances; lenition.
aspirate mutation
An alteration of the initial consonant of a word which occurs in certain Celtic languages under particular linguistic circumstances.
i-mutation
(linguistics) A type of sound change in which a vowel's place of articulation is raised (becomes more close) under the influence of a following /i/, /j/ or similar sound.
aspirate mutations
mutational meltdown
(genetics) The process by which a small population accumulates harmful mutations, which leads to loss of fitness and decline of the population size, which may lead to further accumulation of deleterious mutations due to fixation by genetic drift.
