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Conjugation
 

Conjugation

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Power point animation for teaching bacterial conjugation.

Power point animation for teaching bacterial conjugation.

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    Conjugation Conjugation Presentation Transcript

    • Bacteria have nuclear material
    • Some bacteria have extra-chromosomal DNA called as plasmid
    • Plasmids are self replicating units. Plasmids code for sex pilus.
    • Plasmids are self replicating units.
    • Similar plasmids usually do not stay in the same bacterial cell.
    • They form conjugation tubes with neighboring bacteria with the sex pilus. Bacteria having sex pilus are F+ and those not having it are F-
    • Copy of the plasmid is transported across the conjugation tube to the F- bacterium
    • Copy of the plasmid is transported across the conjugation tube to the F- bacterium
    • Thus the F- bacterium becomes F+.
    • Many different genes especially those important in drug resistance are transmitted between bacteria through the plasmids.