The sciatic nerve is a sensory motor nerve with two divisions that innervate the muscles behind and below the knee. These divisions are the tibial and peroneal nerves. The sciatic nerve is a sensory nerve that originates from the 7th lumbar vertebrae and sacrum of a dogâs spinal cord.
1 Because prokaryotic DNA can interact with the cytoplasm, transcription and translation occur simultaneously. 2  Most prokaryotes contain only one copy of each gene (i.e., they are haploid). 3  Nonessential prokaryotic genes are commonly encoded on extrachromosomal plasmids.
Quick Answer. The two domains of prokaryotes, which are archae and bacteria, contain the common organisms of cyanobacteria, halophiles and hyperthermophiles. Prokaryotes occur in many forms, and some species are more common than others. Of the two prokaryotic domains, the bacteria domain is the most populous and diverse.