F and partial diploids The f-factor in a hfr chromosome can excise out to become an autonomously replicating plasmid If a segment of the chromosome becomes part of the F plasmid during excision, the new element is called an F plasmid. This F'-plasmid can be conjugated to another bacterial cell to form a partial diploid F'-plasmid F-plasmid Hfr chromosome Recombination chromosome \point with deletionF’ and partial diploids • The F-factor in a Hfr chromosome can excise out to become an autonomously replicating plasmid. • If a segment of the chromosome becomes part of the F￾plasmid during excision, the new element is called an F’- plasmid. • This F’-plasmid can be conjugated to another bacterial cell to form a partial diploid. F-plasmid F’-plasmid chromosome with deletion Recombination point Hfr chromosome a a a