Studies on the Sex-Specific Lethals of DROSOPHILA MELANOGASTER. V. Sex Transformation Caused by Interactions between a Female-Specific Lethal, Sxlf#1, and the Male-Specific Lethals mle(3)132, msl-227, and mle |
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| Authors: | T. Uenoyama A. Fukunaga K. Ioshi |
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| Abstract: | Interactions between a female-specific lethal mutant, Sxlf#1, and each of three male-specific lethal mutants, mle(3)132, msl-227 and mle, of Drosophila melanogaster were observed to produce morphological changes in various sexually dimorphic external characters. Chromosomal females heterozygous for Sxlf#1 and homozygous for any one of the male-specific lethals (and to a lesser degree heterozygous for male-specific lethals) sometimes had sex combs, male-type tergites, male-type sternites, male-type anal plates or male-type external genitalia. Penetrance was not high and expression was often incomplete; single individuals never had all the sexually dimorphic structures transformed. When mothers were homozygous for male-specific lethals, higher proportions of female progeny were affected than when mothers were heterozygous, suggesting a maternal effect. |
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