A type of
mutation in which one or more paired
nucleotides are inserted or deleted in the
coding region of a
gene, which causes the
triplet codons to be read in the wrong
frame; the resulting
polypeptide has a garbled
amino acid sequence from the mutated
codon on.
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.