4. Transposition Mechanism which enhances genetic flexibility among plasmids and bacterial chromosomes. Transposons(Jumping genes) are segments of DNA that can transpose or move extremely readily, from plasmid to plasmid or from plasmid to chromosome(and viceversa).In this way, plasmid genes become part of the chromosomal component of genes. When transposons transfer to a new site, it is usually a copy of the transposon that moves, the original transposon remaining in situ. Transposons code for toxin production, resistance to antibiotics as wellas other fuctions.
1.9. STERILIZATION AND DISINFECTION Sterilization: Destruction of all forms of microbial life including spores. Disinfection: Destruction of microbes that cause disease; may not be effective in killing spores. Antisepsis: destruction or inhibition of microorganisms in living tissue there by limiting or preventing the harmful effect of infection. Sterilizing and disinfecting agents are divided into two groups.
Chemical methods of sterilization and disinfection
physical methods of sterilization and disinfection