What is true for plasmid
- Plasmids are widely used in gene transfer
- These are found in virus
- Plasmid contain gene for vital activities
- These are main part of chromosome
The Correct Option is A
Solution and Explanation
The statement that is true for plasmids is: (A) Plasmids are widely used in gene transfer. Plasmids are small, circular pieces of DNA that can be found in many types of cells, including bacteria. They are often used in genetic engineering and biotechnology for gene transfer and as vectors to introduce specific genes into host organisms. The other statements are not accurate: (B) Plasmids are not found in viruses. They are typically found in bacteria, archaea, and some eukaryotic cells. (C) While plasmids can contain genes that provide certain advantages to the host cell, they do not necessarily contain genes for all vital activities. (D) Plasmids are separate from the main chromosomal DNA in a cell and are not considered a main part of the chromosome.
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