 In the resolution phase of recombination , any Holliday junctions formed by the strand invasion process are cut , thereby restoring two separate DNA molecules . This cleavage is done by <unk> complex interacting with RuvC , which together form the RuvABC complex . RuvC is an endonuclease that cuts the degenerate sequence 5 ' - ( A / T ) TT ( G / C ) -3 ' . The sequence is found frequently in DNA , about once every 64 nucleotides . Before cutting , RuvC likely gains access to the Holliday junction by displacing one of the two RuvA tetramers covering the DNA there . Recombination results in either " splice " or " patch " products , depending on how RuvC cleaves the Holliday junction . Splice products are crossover products , in which there is a rearrangement of genetic material around the site of recombination . Patch products , on the other hand , are non @-@ crossover products in which there is no such rearrangement and there is only a " patch " of hybrid DNA in the recombination product . 
