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Regarding plasmid DNA choose the incorrect option:

( a ) confers certain unique phenotypic characters to bacteria possessing them
( b ) small circular DNA
( c ) part of genomic DNA
( d ) other than genomic DNA

1 Answer

(C) is the right answer.

In addition to the genomic DNA (the single chromosome/circular DNA), many bacteria have small circular DNA outside the genomic DNA. These smaller DNA are called plasmids. The plasmid DNA confers certain unique phenotypic characters to such bacteria. One such character is resistance to antibiotics. This plasmid DNA is used to monitor bacterial transformation with foreign DNA.
answered Jan 3, 2014 by pady_1
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