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Write in detail about transduction and i...

Write in detail about transduction and its types.

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Zinder and Lederberg (1952) discovered transduction in Salmonella typhimurum. Phage mediated DNA transfer is called transduction.
Transduction is of two types :
(i) Generalized transduction and
(ii) Specialized or restricted transduction.
(i). Generalized transduction: The ability of a bacteriophage to carry genetic material of any region of bacterial DNA is called generalised transduction.
(ii) Specialized or restricted transduction: The ability of the bacteriophage to carry only a specific region of the bacterial DNA is called specialized or restricted transduction.
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