Germ-line dependence of the maroon-like maternal effect in Drosophila |
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Authors: | J L Marsh E Wieschaus |
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Institution: | Biozentrum, die Universität Basel, Klingelbergstrasse 70, 4056 Basel, Switzerland |
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Abstract: | We have used pole cell transplantations to construct germ-line mosaics for maroon-like (mal), a maternal effect mutation in Drosophila. Such mosaics allow one to determine the cell type in which a gene is active. We find that the maroon-like maternal effect is (1) autonomous to the germ line and (2) dose sensitive in germ-line mosaics. Aldehyde oxidase activity is used as a histological probe to investigate the tissue and temporal distribution of mal+ activity in the developing ovary. The adult ovary shows mal+ activity in the germ line at all discernible stages of oogenesis but no activity is observed in the mesodermally derived follicle cells. Differential mal+ activity is observed even in the ovary of the third-instar larvae. |
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Keywords: | To whom correspondence should be addressed |
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