Question

Discuss with your teacher and find out how to distinguish between plasmid DNA and chromosomal DNA.

Answer 1

Sr. No.	Feature	Plasmid DNA	Chromosomal DNA
1.	Location	It is found in the cytoplasm of most bacterial cells.	It is found inside the cell's nucleus or nucleoid.
2.	Size	It is a very small DNA molecule.	It is a very large DNA molecule.
3.	Molecular Weight	It has a low molecular weight.	It has a very high molecular weight.
4.	Replication	It can replicate independently.	It replicates only with the cell division cycle.
5.	Function	It carries extra genes, such as antibiotic resistance genes.	It carries essential genes required for cell survival.
6.	Structure	It is always double-stranded and circular.	It can be linear or circular, but is highly complex.