'karyosphere' can also refer to...


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The condensed Feulgen-positive mass seen in the anterior, dorsal portion of the mature primary oocyte of Drosophila melanogaster. This mass of DNA is not surrounded by a nuclear envelope. The tetrads subsequently emerge from the karyosphere and enter metaphase of the first meiotic division. The karyosphere stage of oogenesis is the most radiation-sensitive one.

Subjects: Genetics and Genomics.

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