Year-end Sale % OFF 
Abstract
SUMMARYThe karyotype of Z. nasicum is described. It consists of 2n=20 ♂ (XY)-20 ♀ (XX), with a pair of large metacentric autosomes, a metacentric X and an acrocentric Y, the remaining autosomes being acrocentric. Both the metacentric autosomal pair and the XY♂- XX ♀ sex mechanism are present in all the species cytologically examined of Aleuas and Zygoclistron except an undescribed species of Aleuas where the metacentric autosome dissociated into two acrocentric chromosomes. So, an ancient and common origin for both the fusions involved is suggested.The coiling mechanism in the XY pair during the first meiotic division is of an unusual type in Z. nasicum.
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.
