Write in detail about Plasmids.

1.	Write in detail about Plasmids.
Answer» Plasmids are extrachromosomal double stranded, circular, self – replicating, autonomous elements. They contain genes for fertility, antibiotic resistant and heavy metals. It also help 1 in the production of bacteriocins and toxins which are not found in bacterial chromosome. The size of a plasmid varies from 1 to 500 kb usually plasmids contribute to about 0.5 to 5% of the total DNA of bacteria. The number of plasmids per cell varies. Plasmids are classified into different types based on the function. Some of them are F (Fertility) factor, R (Resistance) plasmids, Col (Colicin) plasmids, Ri (Root inducing) plasmids and Ti (Tumour inducing) plasmids.

Answer»

Plasmids are extrachromosomal double stranded, circular, self – replicating, autonomous elements. They contain genes for fertility, antibiotic resistant and heavy metals. It also help 1 in the production of bacteriocins and toxins which are not found in bacterial chromosome.

The size of a plasmid varies from 1 to 500 kb usually plasmids contribute to about 0.5 to 5% of the total DNA of bacteria. The number of plasmids per cell varies. Plasmids are classified into different types based on the function. Some of them are F (Fertility) factor, R (Resistance) plasmids, Col (Colicin) plasmids, Ri (Root inducing) plasmids and Ti (Tumour inducing) plasmids.

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