TAILIEUCHUNG - Báo cáo sinh học: "A new Robertsonian translocation, 8/23, in cattle"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: A new Robertsonian translocation, 8/23, in cattle | 159 Genet Sei Evol 1994 26 159-165 Elsevier INRA Note A new Robertsonian translocation 8 23 in cattle L Biltueva s Sharshova A Sharshov T Ladygina p Borodin A Graphodatsky Institute of Cytology and Genetics Siberian Branch of the Academy of Sciences Novosibirsk 630090 Russia Received 26 January 1993 accepted 29 October 1993 Summary - A new Robertsonian translocation was found in 7 animals of the Grey Ukrainian breed. The translocated chromosome analyzed by GTG- and RBG-banding resulted from the fusion of chromosomes 8 and 23. C-banding suggested that the translocated chromosome has a double heterochromatic block. Synaptonemal complex analysis was performed using electron microscopy. cattle chromosome Robertsonian translocation Resume Une nouvelle translocation robertsonienne bovine 8 23. On a découvert une nouvelle translocation robertsonienne chez 7 représentants de la race Ukrainienne grise. Le chromosome fusionne analyse par une technique de bandes GTG et RBG est le résultat de la fusion des chromosomes 8 et S3. La technique de bande c suggère que le chromosome fusionne possède 2 blocs hétérochromatiques. L analyse des complexes synaptonémiques a été effectuee au microscope électronique. bovin chromosome translocation robertsonienne INTRODUCTION Twenty-eight different centric fusion translocations are known in cattle of which 12 have been described with the method of banding Berland et al 1988 . The most common is the 1 29 translocation found with different frequencies in more than 40 breeds of cattle. Fusions of other pairs are rare Gustavsson 1979 Long 1985 . The present communication describes a new Robertsonian translocation revealed in Grey Ukrainian cattle. Correspondence and reprints 160 L Biltueva et al MATERIALS AND METHODS Seven animals 3Ọ and 4Ơ of Grey Ukrainian cattle heterozygous for a Robertsonian translocation were studied. The information on relationships between the affected animals is absent. Chromosomal preparations were made from blood cells

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