insertion
in·ser·tion / inˈsərshən/ • n. 1. the action of inserting something: the insertion of a line or two into the script. ∎ the placing of a spacecraft or satellite into an orbit or trajectory.2. a thing that is inserted, in particular: ∎ an amendment or addition inserted in a text. ∎ each appearance of an advertisement in a newspaper or periodical. ∎ an ornamental section of cloth or needlework inserted into the plain material of a garment.3. Anat. & Zool. the manner or place of attachment of an organ: close to the point of leaf insertion. ∎ the manner or place of attachment of a muscle to the part that it moves: the names of the muscles and their insertions on the eyeball.4. Biol. the addition of extra DNA or RNA into a section of genetic material.
insertion
1. (of muscles) See voluntary muscle.
2. (in genetics) A point mutation in which an extra nucleotide base is added to the DNA sequence. This results in the misreading of the base sequence during the translation stage of protein synthesis.