Characterization of the female sterile (1) 1304 mutant of Drosophila melanogaster: pattern of RNA metabolism in the ovary

The Journal of Experimental Zoology
P K Mulligan

Abstract

The female sterile mutant of Drosophila melanogaster, fs(1)1304 (1-19 +/- 2), has been characterized. Our studies show that the mutation affects the organization of nucleolar material in the ovarian nurse cells and the pattern of RNA metabolism in the ovary. Autoradiographic analysis of incorporation of 3H-uridine in vivo and analysis of 3H-uridine incorporation into high molecular weight RNA in vitro suggest that RNA from the ovaries of homozygous fs flies is degraded at a higher rate than that from heterozygous fs and wild-type ovaries. It is likely that the RNA class affected is ribosomal RNA. These data are discussed in the context of the functional role for the wild-type gene allelic to fs(1)1304, and it is suggested that one of the effects of the mutation may be on the biogenesis of ribosomes that are to be stored in the oocyte.

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