adjective
Definition: Relating to a type of mutation that alters the way genetic information is read, often by adding or removing nucleotides in a way that disrupts the normal grouping of codons.
Example: The frameshift mutation caused a significant change in the protein produced by the gene.
noun
Definition: A type of genetic mutation that occurs when the number of nucleotides inserted or deleted from a DNA sequence is not a multiple of three, causing a shift in the reading frame of the genetic code.
Example: The frameshift in the DNA sequence led to a significant change in the protein produced.