1. The Genetics of Bacteria

2. Bacterial Genome:
Circular DNA - double stranded . its chromosome in nucleoid
Plasmid - small circles of “extra” DNA - not necessary for survival, however important traits
fertility factor, antibiotic resistance

4. REPLICATION

5. Bacterial chromo. replicates
-two copies move apart
-cell grows
-plasma membrane pinches
-new cell wall deposited

6. division produces CLONE

7. Origin of Replication

8. Replication in both directions

9. Replication Forks move bidirectionly until they meet

10. Genetically identical daughter cells (clones)

11. Genetic Recombination:

12. Genetic Recombination:
`Transformation - uptake of “naked” DNA from the environment
Transduction -
Conjugation -

13. Genetic Recombination:
`Transformation - uptake of “naked” DNA from the environment into its chromosome.

14. Genetic Recombination:
`Transformation

15. Genetic Recombination:
`Transduction -
A phage (virus) transfers bacterial genes from one host cell to another.

16. Genetic Recombination:
`Transduction -
A phage (virus) transfers bacterial genes from one host cell to another.

17. Genetic Recombination:
`Transduction -
A phage (virus) transfers bacterial genes from one host cell to another.

18. Genetic Recombination:
`Transduction -
A phage (virus) transfers bacterial genes from one host cell to another.

21. Genetic Recombination:
`Conjugation - bacterial cells join and transfer genetic material through a sex pilli.
F factor = fertility factor

22. F+
HFR