NURSING ANM AND GNM

Detailed explanation-1: -Most bacteria have double-stranded circular DNA as their genetic material. This circular DNA is suspended in the cytoplasm with other proteins as a distinct structure called the nucleoid . Some may have more than one circular DNA and some bacteria like Streptomyces have linear double-stranded DNA.

Detailed explanation-2: -A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently. They are most commonly found as small circular, double-stranded DNA molecules in bacteria; however, plasmids are sometimes present in archaea and eukaryotic organisms.

Detailed explanation-3: -While most prokaryotes, like E. coli, contain a single circular DNA molecule that makes up their entire genome, recent studies have indicated that some prokaryotes contain as many as four linear or circular chromosomes. For example, Vibrio cholerae, the bacteria that causes cholera, contains two circular chromosomes.