tailieunhanh - Báo cáo sinh học: "The gonadal histology of triploid chicken (Gallus domesticus) embryos"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The gonadal histology of triploid chicken (Gallus domesticus) embryos | Genet Sei Evol 1993 25 205-210 Elsevier INRA . . wuowtowr JOUY H JOSAS 4 CT. I993 205 Original article The gonadal histology of triploid chicken Gallus domesticus embryos GA Bonaminio1 NS Fechheimer 2 3t 1 Department of Molecular Genetics The Ohio State University Columbus OH 2 Department of Dairy Science The Ohio State University Columbus OH 3 Department of Poultry Science The Ohio State University 2027 Coffey Rd Columbus OH 43210 USA Received 4 May 1992 accepted 2 February 1993 Summary - Gonadal histological analysis was conducted on 7 pure triploid White Leghorn chicken embryos and 1 2n 3n chimera at d 13 of incubation. Triploid embryos with sex chromosome complements zzz and zww exhibited gonadal organization consistent with that of normal diploid embryos while that of the zzw triploid embryo was consistent with adult intersex birds. The morphology of the testes of the 5 zzz triploids resembled that of normal zz males. The right and left ovaries of the zww triploid embryo were similar histologically to those of normal diploid zw females. The intersex 717AN triploid and zw zzw chimera exhibited normal left ovarian organization but the right ovaries contained testis-like structures similar to the reported histology of right ovaries in adult zzw birds. The deviation of the observed numbers of each type of triploid embryos at d 13 of incubation from the expected number based on previous observations of embryos at 16 to 18 h of incubation suggests differential mortality for the 3 types of triploid embryos. triploid chicken gonad intersex Resume - L histologie des gonades d embryons tripldides de poulet. L analyse his-tologique des gonades a porté sur 7 embryons de poulet Leghorn blanche purs triploides et 1 chimère 2n 3n au 1ST jour d incubation. Les embryons triploi des avec des complements chromosomiques sexuels zzz et zww manifestaient une organisation gonadique analogue à celle d embryons diploỉdes normaux alors que celles des embryons triploi .