RNA

RNA (Ribonucleic acid) is used along with DNA in genetics. While DNA is the manner in which the organism's genes are stored (with the exception of some viruses which use RNA for that purpose), RNA is used in "transfer" and "messenger" functions to transmit genetic information where it is needed in biological processes. RNA has four bases, guanine, adenine, uracil and cytosine, which are coded as G, A, U, and C respectively. Three of these are the same as those in DNA, but uracil (U) is used in place of the thymine (T) found in DNA. With this one-on-one correspondence, all the information contained in DNA can be encoded in RNA and vice versa.