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Which of the following statements is true?Plasmids can replicate independently from chromosomal DNA.Plasmids always contain genes that are vital for survival of the organism.Plasmids can only be transferred by cell division.Plasmids are found as part of the circular chromosome.

Question

Which of the following statements is true?Plasmids can replicate independently from chromosomal DNA.Plasmids always contain genes that are vital for survival of the organism.Plasmids can only be transferred by cell division.Plasmids are found as part of the circular chromosome.

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Solution

The true statement is: "Plasmids can replicate independently from chromosomal DNA."

Explanation:

  1. Plasmids are small, circular, double-stranded DNA molecules that are distinct from a cell's chromosomal DNA. They can replicate independently, which means they can make copies of themselves without the need for the cell's chromosomal DNA to be replicated.

  2. Plasmids do not always contain genes that are vital for the survival of the organism. They often carry genes that may benefit the survival of the organism, such as antibiotic resistance genes, but these are not typically essential for basic survival.

  3. Plasmids can be transferred between cells through a process called conjugation, not only by cell division. This is one way bacteria can share beneficial genes with each other.

  4. Plasmids are not found as part of the circular chromosome. They are separate entities within the cell.

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