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The principles underlying the assembly of intranuclear compartments are only beginning to be understood. The karyosome is an organelle typical of oocyte nuclei. It represents the tightly packed oocyte chromosomes, arrested at the diplotene of meiotic prophase. It has been known from several insect orders that a prominent capsule of unknown materials is(More)
Oogenesis in Drosophila is a useful model for studying cell differentiation. We have analyzed the role of the egh gene in these processes with the aid of a newly isolated viable but female sterile allele. This mutation results in diverse variable defects in oogenesis. The most frequent defect being follicles that have either more or less than the normal(More)
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