Cell The Unit of Life — BIOLOGY STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYCell The Unit of Life3 Marks
Question
What are plasmids? Describe their role in bacteria.
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Answer
In addition to the genomic DNA (the single chromosome circular DNA), many bacteria have small circular DNA outside the genomic DNAThese 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.
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