Abstract
Male meiosis was studied in Capsus ater (L.), Calocoris quadripunctatus (Vil.). Pilophorus cinnamopterus (Kbm.) and Plagiognathus arbustorum (F.). The chromosomes condense out from diffuse stage as single units during meiotic prophase. sister chromatids being not separable. Opening-out of bivalents occurs. and homologous chromosomes are connected generally only at one site by tenacious threads comparable to collochores found in Drosophila male meiosis, i.e.. meiosis is achiasmatic. At late prophase. bivalents consist of twochromosomes aligned in parallel. At metaphase 1, bivalents orientate equatorially. and chromosomes move sideways towards the poles at anaphase I. i.e., they are unable to show telokinetic activity. If mchromosomes are present, they always form a bivalent, show negative heteropycnosis from late prophase onwards and are situated on the periphery of a radial metaphase plate at metaphase 11.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
