Đang chuẩn bị liên kết để tải về tài liệu:
Báo cáo sinh học: "Mosaicism of 50,XX/51,XX in a Murrah buffalo Bubalus bubalis"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Mosaicism of 50,XX/51,XX in a Murrah buffalo Bubalus bubalis | 443 Genet Sei Evol 1991 23 443-448 Elsevier INRA Note . Mosaicism of 50 XX 51 XX in a Murrah buffalo Bubalus bubalis BR Yadav1 s Kumar1 OS Tomer2 CR Balakrishnan2 1 National Institute of Animal Genetics NDRI Campus Karnal-132001 2 Dairy Cattle Genetics Division National Dairy Research Institute Kamal-132001 India Received 23 October 1989 accepted 1 July 1991 Summary - Cytogenetical and gynaecological studies were carried out on an eight year old buffalo with irregular breeding history. The animal had mosaicism of two cell lines 51 XX in 22.67 and 50 XX in 67.33 with normal reproductive organs and the tract. The extra chromosome was identified as the fifth submetacentric autosome by conventional staining and confirmed with the G-banding technique. Murrah buffalo mosaicism chromosome autausomal trisomy Resume - Mosãique de 50 XX 51 XX chez un buffle Murrah Bubalus bubaỉis . Des études cytogénétiques et gynécologiques ont été réalisées sur une bufflesse de 8 ans ayant eu une Carriere reproductive irrégulière. L animal présentait une mosaĩque de 2 lignées cellulaires 51 XX pour 22 67 et 50 XX pour 67 33 avec un tractus et des organes génitaux normaux. Le chromosome supplémentaire a été identifie comme étant le cinquième autosome submétacentrique par les techniques de coloration classique comme avec le typage en bande G. bufffe Murrah mosa ique chromosome trisomie autosomique Correspondence and reprints . . . Present address Department of Molecular Genetics Institute of Animal Physiology and Genetics Ers Roslin Midlothian EH25 9PS Scotland UK 444 BR Yadav et al INTRODUCTION Reproductive disorders such as repeat breeding spontaneous abortions late maturity anoestrous etc. are major problems in buffalo breeding. During routine screening of such animals in an organized herd an eight year old buffalo with irregular heat cycle was referred to our laboratory for cytogenetical examination. The breeding history of the animal revealed that she had calved three times and .