Do prokaryotes and eukaryotes have circular chromosomes?
Eukaryotic chromosomes are composed of chromatin, and each consists of two complementary strands of DNA coiled tightly around histones.
|Eukaryotic Chromosome||Prokaryotic Chromosome|
Do prokaryotic cells have circular DNA?
Most prokaryotes carry a small amount of genetic material in the form of a single molecule, or chromosome, of circular DNA. The DNA in prokaryotes is contained in a central area of the cell called the nucleoid, which is not surrounded by a nuclear membrane.
Do prokaryotes have lysosomes?
No, prokaryotic cells do not have lysosomes. This is due to the fact that lysosomes are formed by the endoplasmic reticulum as well as golgi bodies – which are membrane bound organelles exclusive to eukaryotes.
Do prokaryotes have chromosomes?
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.
Why do bacteria have circular DNA?
Most bacteria have circular plasmids because their genome is much smaller than many eukaryotes, and it’s more feasible to manage.
Do archaea have circular chromosomes?
While archaea, like many bacteria, possess circular chromosomes it has become apparent that, at the levels of DNA replication machinery and mechanism, mode of genome segregation and even cell division machinery, many archaeal species display more eukaryotic-like properties (for reviews of the replication machinery and …