Physical Mapping of the Ribosomal DNA Region of Euglena gracilis Chloroplast DNA

Abstract
The relative positions of endo R .cntdot. EcoRI and endo R .cntdot. Bg/II cleavage sites are mapped within the linked DNA fragments Bam-E-E-D [generated using Bam-H-I] of the E. gracilis chloroplast DNA. The DNA segment Bam-E-E-D contains 3 contiguous repeated segments of approximately 5600 base pairs. Each repeated segment can code for an rRNA gene (16-S and 23-S).