TAILIEUCHUNG - Báo cáo sinh học: "Association among quantitative, chromosomal and enzymatic traits in a natural population of Drosophila melanogaster"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Association among quantitative, chromosomal and enzymatic traits in a natural population of Drosophila melanogaster | Genet Sei Evol 1993 25 229-248 @ Elsevier INRA 229 Original article Association among quantitative chromosomal and enzymatic traits in a natural population of Drosophila melanogaster M Hernandez JM Larruga AM Gonzalez VM Cabrera University of La Laguna Department of Genetics Canary Islands Spain Received 27 March 1992 accepted 9 February 1993 Summary - A sample of 1 359 males and 1 259 females from a natural population of Drosophila melanogaster of the Canary Islands was simultaneously examined for wing length inversion polymorphisms and gene variation at 10 allozyme loci. Correlations and nonrandom associations between those genetic traits were estimated. In contrast to previous studies large amounts of linkage disequilibrium have been found. Frequencies of significant gametic associations between linked and unlinked elements were 100 and 25 respectively for chromosome inversions 81 and 4 for chromosome inversions and allozymes and 36 and 0 for pairs of allozymes. Temporal stability in chromosome and allozyme frequencies and the average number of alleles per locus rule out a recent bottleneck effect. Mean and coefficient of variation of wing length are correlated with the degree of heterokaryotypy both negatively and with the degree of heterozygosis positively for the mean negatively for the coefficient of variation mainly implying chromosome 3 elements. Individuals with wing length above or below a standard deviation from the population mean showed characteristics for the other genetic traits which resembled those of northern or southern populations of the species. Drosophila melanogaster wing size chromosomal inversion enzyme linkage disequilibrium Resume Associations entre un caractère quantitatif et des caractères chromo-somiques et enzymatiques dans une population naturelie de Drosophila melanogaster. Un échantillon de 1 359 males et 1 259 femelles d une population naturelie de Drosophila melanogaster des ties Canaries a été étudiée pour la longueur de Vaile

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