title: Physical mapping of the ribosomal DNA region of Euglena gracilis chloroplast DNA.
abstract: 1. The relative positions of endo R . EcoRI and endo R . Bg/II cleavage sites are mapped within the linked DNA fragments Bam-E-E-D of the Euglena gracilis chloroplast DNA. 2. The DNA segment Bam-E-E-D contains three contiguous repeated segments of approximately 5600 base pairs. 3. Each repeated segment can code for an rRNA gene (16-S and 23-S).
mesh_terms: D002736:Chloroplasts; D004247:DNA; D004262:DNA Restriction Enzymes / Q000378:metabolism; D003854:Deoxyribonucleotides / Q000032:analysis; D005056:Euglena gracilis; D005796:Genes; D009693:Nucleic Acid Hybridization; D012270:Ribosomes / Q000378:metabolism
chemical_list: D003854:Deoxyribonucleotides; D004247:DNA; D004262:DNA Restriction Enzymes