Ovarian cytology of an agametic mutant in Drosophila melanogaster

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dc.contributor.advisor Engstrom, Lee E. en_US
dc.contributor.author Poland, Eva J. en_US
dc.date.accessioned 2011-06-03T19:31:53Z
dc.date.available 2011-06-03T19:31:53Z
dc.date.created 1976 en_US
dc.date.issued 1976
dc.identifier LD2489.Z78 1976 .P64 en_US
dc.identifier.uri http://cardinalscholar.bsu.edu/handle/handle/181459
dc.description.abstract At least some areas of the embryonic blastoderm in Drosophila melanogaster appear to be determined by substances produced under control of the maternal genome without involvement of the embryonic genome. Study of mutant genes controlling the production of such morphogenic substances would provide valuable information about these substances and the nature of determination itself. In this thesis, the adult ovaries in offspring of females containing sex chromosomes originating from a wild-type strain of Drosophila melanogaster collected on Margarita Island, Venezuela have been examined. After selection on such chromosomes, over 50% of the offspring produced by homozygous females contained either one or two agametic gonads. The delayed expression is due to temperature-sensitive gene expression duringoogenesis. Two micron sections of normal and abnormal ovaries of this strain indicate the mesodermal components of the abnormal ovaries including the ovarian sheaths and the ovariole epithelial sheaths, were normal. In addition, attachment of the ovaries to the oviducts are normal. The abnormal ovarioles contain cells which appear to be mesodermally-derived follicle cells, but no normal egg chambers are seen. The germaria also contain follicle cells but no cells resembling stem cells or cystocytes are seen. It is concluded: (1) the development of ovarian germinal and mesodermal components are completely independent and (2) the mutant gene(s) prevent normal differentiation of pole cells into germ cells.
dc.format.extent iv, 39 leaves : ill. ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Drosophila melanogaster. en_US
dc.subject.lcsh Mutation (Biology) en_US
dc.subject.lcsh Cytogenetics. en_US
dc.title Ovarian cytology of an agametic mutant in Drosophila melanogaster en_US
dc.description.degree Thesis (M.S.)
dc.identifier.cardcat-url http://liblink.bsu.edu/catkey/416449 en_US

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  • Master's Theses [5510]
    Master's theses submitted to the Graduate School by Ball State University master's degree candidates in partial fulfillment of degree requirements.

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