SSU rRNA
Small subunit ribosomal ribonucleic acid is the smallest of the two major RNA components of the ribosome.
Associated with a number of ribosomal proteins, the SSU rRNA forms the small subunit of the ribosome. It is encoded by the SSU-rDNA.Characteristics
SSU rRNA sequences are widely used for working out evolutionary relationships among organisms, since they are of ancient origin and are found in all known forms of life.