Question

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Question No. 38
Find the INCORRECT statement about plasmids.
Answer
A. They are circular
C. They are transferrable
B. They replicate independently
D. They are single stranded
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Answer 1

Answer:

Plasmids are extrachromosomal genetic material present in bacteria. They are capable of independent replication. They are a seperate entity present in the cytoplasm. They are circular double stranded DNA molecule and contains some specialized genes like antibiotic resistant genes. They are transferable.

Thus, the correct answer is 'Single stranded.'

Answer 2

The incorrect statement about plasmids is that they are single-stranded (option D).

• Plasmids are Deoxyribonucleic Acid (DNA) circular threads present in certain bacterial species.
• They serve as a vector for delivering the required gene sequence to the host organism to get a specific phenotype.
• They are DNA strands that are double stranded with each other in the shape of a helix.
• They can self-replicate in the host organism and hence serve as gene carriers.
• Hence, we can conclude that they are not single-stranded molecules.