title: Ribosomal ribonucleic acid in evolution.
mesh_terms: D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D056890:Eukaryota; D051379:Mice; D008970:Molecular Weight; D009693:Nucleic Acid Hybridization; D012335:RNA, Ribosomal; D051381:Rats; D013045:Species Specificity
chemical_list: D012335:RNA, Ribosomal