title: C-band morphology of T(8;9)/8;9 in Blattella germanica.
abstract: Centromere position and each arm of the T(8;9)/8;9 quadrivalent at late pachytene can be recognized by C-banding. The chromosome 9 breakpoint lies immediately adjacent to the centromeric C-band; that of 8, in the general region of the centromere but the relationship to centromeric bands was not determined since the latter stain very faintly. Chromosome 9 differs from no. 8 in the presence of a complex series of intercalary bands, heavy centromeric bands and, overall, a larger amount of C-band material. Possible implications of these differences with respect to chromosome breakability and the nature and distribution of mutant loci are noted. Earlier identification of adjacent-1 and adjacent-2 metaphase I ring orientations, made on the basis of orientation pattern, was confirmed.
authors.affiliation: Department of Entomology, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA.
authors.forename: M H
authors.initials: MH
authors.lastname: Ross
authors.forename: C B
authors.initials: CB
authors.lastname: Keil