Prokaryotes do have DNA, but it is not organized in a nucleus. Instead, a prokaryotic DNA is free-floating within the cell. Prokaryotes are unlike eukaryotic cells, which have organized nuclei that contain all their DNA.
Prokaryotes are small-sized cells. They are a simple life form, commonly referred to as microorganisms. Due to a lack of an organized nucleus, Prokaryotes are able to perform very few functions. Furthermore, they lack all membrane-bound organelles. Therefore, they are unable to function at a complex level, unlike eukaryotic cells. However, they can still propagate, or duplicate and reproduce, through a process known as binary fission.