intransitive. Genetics. Of a break in a chromosome or chromatid: to be repaired by restitution (restitution, n. 7) of the two broken ends. Also trans…

Biology. intransitive and transitive (reflexive). Of a living organism or its genetic material: to reproduce, to give rise to a copy of (itself).

In various transferred and figurative uses: To unite, combine, join, mend. Also spec. in Biology, to join or insert (a gene or gene fragment).