title: A denaturation map of sea urchin ribosomal DNA.
abstract: The ribosomal RNA genes from the sea urchin Lytechinus variegatus have been studied with the electron microsocope using the technique of denaturation mapping. A repeating pattern of denatured regions was found with an average repeat length of 3.87 +/- 0.24 mum. This corresponds to a DNA sequence of approximately 12,000 base pairs with a molecular weight of 8 X 10(6) daltons.
mesh_terms: D000818:Animals; D004247:DNA; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D012617:Sea Urchins
chemical_list: D012335:RNA, Ribosomal; D004247:DNA