BIO457 Ch7 Genetic TransferOnline version Genetic transfer in bacteria by K Kitzmiller 1 Conjugation 2 Plasmids 3 Transduction 4 Transformation Direct physical contact Sex pili Conjugation bridge Relaxasome F factor Hfr strain interrupted mating Fertiliy Resistance Degradative Col Virulence Bacteriophage cotransduction P1 or P22 Packaging bacterial genes Competent cells natural and artificial cutting DNA into smaller pieces then uptake