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.
Most of what we know about the chromosomes of prokaryotes have been obtained from studies of E.coli â it is the organism of choice for such research of prokaryotes. Chromosome consists of doubleâstranded circular DNA. Prokaryotes do not contain nucleus or other membrane bounded organelles. The term prokaryotes actually means before nucleus. Chromosome is stored in a special area called nucleoid. The genome of prokaryotes is often significantly larger than the cell itself.