<prompt> F plasmid of high frequency recombination isExtrachromosomalChromosomalMesosomeRibosomes  <response>: Hfr Conjugation: F factor being a plasmid, is always Extra-chromosomal It may integrate with bacterial chromosome and behave as episome. Such donor cells are able to transfer chromosomal DNA to recipient cells with high frequency in comparison to F cells, therefore, named as Hfr cells high frequency of recombination. During conjugation of Hfr cell with an F- cell, only few chromosomal genes along with only a pa of the F factor get transferred. Hence, F- recipient cells do not become F cells. 