Prokaryotes have much less DNA than eukaryotes. Most of the DNA of prokaryotes is located in one ring-shaped chromosome found in the nucleoid, whereas in eukaryotes, the DNA is located in a membrane-enclosed nucleus. Many prokaryotes possess plasmids, which are small ring-shaped DNA molecules that only have a few genes.
Work Step by Step
Contrast the DNA of prokaryotes with the DNA of eukaryotes. It is especially helpful to note the simplicity of the prokaryotic DNA due to its ring form and plasmids, compared to the complex double helical structure of eukaryotic DNA, which is located in a membrane-bound nucleus.