<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>Any type of DNA sequence rearrangement involving possible exchange and frequent loss of segments of DNA by either homologous recombination or non-homologous end-joining of broken DNA strands. Recombination is involved in assorting genes during reproduction, in repairing broken DNA, and in maintaining cell viability at the expense of long-term genomic stability.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>