相そう同どう組くみ換かえそうどうくみかえMeanings1nounhomologous recombinationTechnical term in genetics and molecular biology. Refers to the exchange of genetic material between similar or identical DNA sequences.相そう同どう組くみ換かえはDNA修しゅう復ふくの重じゅう要ようなメカニズムです。