Heterosis in a wild strain of Drosophila polymorpha with a lethal closely linked to the major esterase locus |
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| Authors: | Marly Napp Antonio R. Cordeiro |
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| Affiliation: | (1) Departamento de Genética, Caixa Postal 1953, Universidade Federal do Rio Grande do Sul, 90000 Porto Alegre, RS, Brasil;(2) Present address: Departamento de Genética, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Ilha do Fundão, 20000 Rio de Janeiro, RJ, Brasil |
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| Abstract: | A laboratory population derived from a single wild inseminated female has a lethal so closely linked to the major esterase locus that in 3 years of observations no crossover products have been detected. Linkage with a chromosome inversion was excluded by cytological analysis. The heterozygotes are superior to the homozygotes in egg-adult viability, egg-laying rate, and longevity. Electrophoretic analysis of larvae, pupae, and 2-h-old adults shows that the specific phase for the lethal effect in homozygotes is the pupal stage. |
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| Keywords: | heterosis Drosophila polymorpha lethal genes esterases electrophoresis |
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