FISH detection of ribosomal cistrons and assortment-distortion for X and B chromosomes in Dichroplus pratensis (Acrididae)

• Published in: Cytogenetic and genome research Vol. 106; no. 2-4; pp. 295 - 301
• Main Authors: Bidau, C.J., Rosato, M., Martí, D.A.
• Format: Journal Article
• Language: English
• Published: Basel, Switzerland S. Karger AG 01.01.2004
• Subjects: Acrididae; Animals; Chromosomal Instability - genetics; Chromosomes - genetics; DNA, Ribosomal - genetics; Female; Genes - genetics; Grasshoppers - genetics; In Situ Hybridization, Fluorescence - methods; Male; Meiosis - genetics; Meiotic Prophase I - genetics; Melanoplinae; Nucleolus Organizer Region - genetics; Ribosomes - genetics; Spindle Apparatus - genetics; Structure and Origin of B Chromosomes; X Chromosome - genetics

Assortment-distortion with respect to the X and NOR activity of a rare mitotically stable B chromosome (B N ), was examined in 16 males of Dichroplus pratensis (Acrididae: Melanoplinae) from Argentine populations. In 1B individuals, the X and B associate preferentially during prophase I reaching a m...