Centromeric Ring and Arrangement of Centromeres in Interphase of Lathyrus sphaericus as Detected by C-banding

Abstract

The C-bands of Lathyrus sphaericus are present in the centromeric region of all the 14 chromosomes and the satellited region of the nucleolar pair. Orientation of interphase chromosomes is non-random and late anaphase arrangement of chromosomes is maintained up to next late prophase through interphase. At interphase, centromeric regions form a ring-like arrangement towards one pole and chromosomes remain polarised. The chromosomes may be present singly or 2-3 centromeres may associate to form 5-7 centromeric masses. Regularity of spatial relationshipof chromosomes throughout the division cycle is indicated. Non-random arrangement of interphase chromosomes and organization of a structure like centromeric ring for maintaining the spatial relationship have been demonstrated. © 1984, Japan Mendel Society, International Society of Cytology. All rights reserved.