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.
1 In eukaryotes, most of the DNA (98.5% in humans) does not code for protein or RNA. 2  Gene-related regulatory sequences and introns account for 24% of the human genome. 3  Introns account for most of the difference in average length of eukaryotic (27,000 base pairs) and prokaryotic genes (1,000 base pairs). Most of the DNA in a prokaryote genome codes for protein, tRNA, or rRNA. 2  The small amount of noncoding DNA consists mainly of regulatory sequences. 3  In eukaryotes, most of the DNA (98.5% in humans) does not code for protein or RNA.