Question

Which is not correct about plasmid

• A. Host chromosome can be integrated with plasmid
• B. Transfer of plasmid can occur from one cell to another with the killing of the former
• C. It is extrachromosomal DNA in bacteria
• D. It is not an integral part but inert genetic material.

Answer 1

Answer: (B)

Transfer of plasmid can occur from one cell to another with the killing of the former

B. Transfer of plasmid can occur from one cell to another with the killing of former.

Solution : The transfer of plasmid can take place any time in a bacteria during its growth by horizontal gene transfer by conjugation. This does not kill the bacteria at all but just transfers the plasmid . The plasmid is inert and does not usually be integrated into host chromosome.

So the correct answer is "Transfer of plasmid can occur from one cell to another with the killing of former."