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KMID : 0381119790010010018
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Genes and Genomics
1979 Volume.1 No. 1 p.18 ~ p.27
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INVERSION POLYMORPHISM IN WILD POPULATIONS OF DROSOPHILA MELANOGASTER
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Paik Yong-Kyun
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Abstract
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Natural populations of Drosophila melanogaster at nine localities in South Korea were sampled, and 58 different paracentric inversions were recovered. Only six of these were common and cosmopolitan. The rest were new, rare and endemic. Of this latter group four were X-chromosomal, 25 were on the second chromosome, and 23 on the third
chromosome. Six of the autosomal paracentrics were double inversions of the overlapping type. Different populations were often unlike with regard to the relative frequently of their coexisting inversions. Certain inversions were found frequently in some localities, but were absent from the others. An analysis of the frequency distribution of the autosomal inversions indicated that in most localities examined the left arm of Chromosome 3 carried inversions at a frequency low enough to suggest that some selectively unfavorable genes which lower the fitness of their carriers present. The frequencies of the inversions in the other autosomal arms varied significantly throughout all the areas studied.
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KEYWORD
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