Answer: episomal

AnswerCrossword Clue
episomala genetic determinant (as the DNA of some bacteriophages) that can replicate autonomously in bacterial cytoplasm or as an integral part of the chromosomes
episomalbacterial DNA that is extrachromosomal and that may replicate autonomously as a plasmid or become incorporated into the chromosome and replicate with it
episomalpertaining to an episome (a genetically active particle found in bacteria)