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Biotechnology: Principles and Processes
Plasmids as Vectors
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Concepts tested
- Plasmid as extrachromosomal DNA
All Questions
2002 AIPMT 1 question
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In bacteria, plasmid is : -Plasmids are small, circular, double-stranded DNA molecules present in bacteria in addition to the main bacterial chromosome.
They replicate independently of the chromosome, so they are called extrachromosomal DNA.
They are functional: they carry genes for antibiotic resistance, fertility (F factor) and other properties, and they are used as vectors in genetic engineering.
So a plasmid is extra chromosomal material.