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Báo cáo sinh học: "Cytogenetic analysis (GTG, CBG and NOR bands) of a wild boar population"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Cytogenetic analysis (GTG, CBG and NOR bands) of a wild boar population | 1 Genet Set Evol 1990 22 1-9 Elsevier INRA Original article .9 1 analysis GTG CBG and NOR bands of a wild boar population Sus scrofa scrofa with chromosomal polymorphism in the south-east of Spain J J Arroyo Nombela1 c Rodríguez Murcia1 T Abaigar2 JR Vericad2 1 Laboratorio de Citogenética Animal GSIC c Serrano 113 28006 Madrid 2 Estación Experimental de Zonas Aridas CSIC c General Segura 1 04001 Almería Spain Received 2 January 1989 accepted 23 September 1989 Summary - The karyotypes of 12 wild boars 4 J 8 Ọ from populations in Sierra Nevada and Sierra de Baza Almería were analysed. Chromosomal polymorphism giving rise to 3 variants in the diploid number 2n 38 1 cj 2n 37 2 J1 1 Ọ and 2n 36 1 cf 7 Ọ was observed. By means of GTC-band analysis this polymorphism proved to be the consequence of a Robertsonian translocation between members of pairs 15 and 17 of karyotypes with 2n 38 thereby creating a long submetacentric chromosome 15 17 together with 2 free acrocentric chromosomes 15 and 17 in individuals with 2n 37 and a pair of long submetacentric chromosomes 15 17 in 2n 36 specimens. CBG-band analysis revealed 2 types of staining for heterochromatin a dark staining characteristic of acrocentric chromosomes and occasionally present in the submetacentric 15 17 and a pale staining characteristic of the rest of the submetacentric chromosomes. The Y-chromosome presented dark heterochromatin over the entire length of its long arm. The nucleolus organizers were observed on pairs 8 and 10 and showed heteromorphism of the size of the silver block and in the distribution in both pairs. wild board karyotype chromosomal polymorphism nucleolus organizer region heterochromatin Resume - Analyse cytogénétique bandes GTG CBG et NOR d une population de sangliers Sus scrota scrota el de son polymorphisme dans le Sud-Est de I Espagne - Les caryotypes de 12 sangliers 4 males et 8 ệmellẹs provenant de la Sierra Nevada et Sierra de Baza Almeria ont été analyses. Un polymorphism .