Question

Which statement(s) among A-D is/are not applicable to plasmids? A. They only replicate the same time as the larger chromosome. B. A plasmid may integrate into the chromosome. C. They may be of low or high copy number. D. Plasmids undergoing conjugation duplicate themselves by rolling circle replication.

Answer 1

Answer:

A) They only replicate the same time as the larger chromosome.

Explanation:

• Plasmids are small, circular, double stranded DNA molecule, which can replicate independently from its chromosomal DNA.
• If plasmids are used for experiments, they are called vectors.
• Scientists use plasmids as tools for cloning, transferring and manipulating genes.
• They are distinct from chromosomes in being non-essential.
• Plasmids are sometimes present in archaea and eukaryotic organisms.
• Plasmids often carry genes that benefit the survival of the organism, such as by providing antibiotic resistance.
• They do not replicate the same time as the larger chromosome.