Drosophila melanogaster 수개 집단내의 역위 다형현상 = Chromosomal Inversion Studies in Local Populations of Drosophila Melanogaster

다국어 초록 (Multilingual Abstract)

Karyotypic variation studies in several wild populations of Drosophila melanogaster were made on the inversion polymorphisms. From four different localities, a total of 3154 females inseminated in nature were collected twice a year both in 1983 and in 1984 with a month apart, in September and October. In this study, twenty two different inversions were found: two on X-chromosomal, seven on the second, and thirteen on the third chromosome. Of those paracentric only, seven were either common or rare cosmopolitan, and the rest was either unique or recurrent endemic. The frequency of common cosmopolitan inversions was positively correlative with each other. The order of frequent inversions was changeable, but did not appear to repeat any cycle in seasonal or annual changes. The annual changes of inversion frequencies were found to display significant variations, and furthermore the total frequencies exhibited a trend to increase from year to year in all geographic populations in this study.