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Báo cáo sinh học: " Genetic relationships in Spanish dog breeds. II. The analysis of biochemical polymorphism"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic relationships in Spanish dog breeds. II. The analysis of biochemical polymorphism | Genet Sei Evol 1992 24 245-263 Elsevier INRA 245 Original article Genetic relationships in Spanish dog breeds. II. The analysis of biochemical polymorphism J Jordana J Piedrafita A Sanchez Universitat Autònoma de Barcelona Unitat de Genètica i Millora Animal Departament de Patologia i de Produce Animals Facultat de Veterinària 08193-Bellaterra Barcelona Spain Received 27 July 1990 accepted 24 February 1992 Summary - The phylogenetic relationships between 10 Spanish dog breeds were studied using the gene frequency values obtained from the electrophoretic analysis of 21 structural genic loci that code for blood-soluble proteins and enzymes. In addition we studied the genetic differentiation within breeds. In some cases the genetic distances between subpopulations of the same breed were greater than the genetic distances between different breeds. The average between-breed distance has a value of 0.0197 0.0128 with extreme values of D 0.000 between Gos d Atura and Podenco Ibérico and of D 0.051 for the Mastin Espanol - Ca de Bestian pair. The groupings of Spanish dog breeds obtained in our study from morphological and biochemical data were apparently quite similar. The correlation between enzymatic and morphological distances was however low r 0.07 and non-significant. The estimates of the divergence times among the 4 ancestral trunks suggest that the ancestral trunks separated independently in a relatively short interval of time between 30 000 and 55 000 years ago. Spanish dog breeds biochemical polymorphisms electrophoresis genetic distance I genetic relationships Resume Relations génétiques entre des races canines espagnoles. II. Analyse du polymorphisme biochimique. À partir des valeurs des frequences géniques obtenues par I analyse électrophorétique de 21 locus qui codent pour des enzymes et des protéines solubles du sang on a étudié les relations phylogénétiques existant entre dix races canines espagnoles. On a determine aussi le niveau de diffdrenciation .