An RNA molecule that encodes the amino acid sequence of a protein. It is the mediating template between DNA and proteins. The encoded information from a particular gene is transferred from a strand of DNA by the construction of a complementary template strand of RNA (mrna) through the transcription process. Next, three nucleotide segments of RNA, called trna (transfer RNA), which are attached to specific amino acids, match up with the template strand of mrna to order the correct sequence of amino acids. These amino acids are then bonded together to form a protein a in a process, called translation. Translation occurs in the ribosomes, which are composed of proteins and a third kind of RNA, rrna (ribosomal RNA) .