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Asynchronous mitotic domains during blastoderm formation in Musca domestica L. (Diptera)

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Zitation

Sommer, R., & Tautz, D. (1991). Asynchronous mitotic domains during blastoderm formation in Musca domestica L. (Diptera). Rouxs Archives of Developmental Biology, 199(6), 373-376. doi:10.1007/BF01705931.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-0F23-E
Zusammenfassung
We describe the mitotic cleavage patterns during blastoderm stage of the house fly Musca domestica L. Nuclear divisions up to mitotic stage 11 are apparently synchronous. Beginning with stage 12, nuclear divisions in the posterior third of the embryo lag behind, resulting first in a parasynchronous and finally in an asynchronous cleavage pattern. Thus a stage exists where all nuclei in the anterior region have completed 14 nuclear division cycles, while those in the posterior region have completed only 13 cycles. The border region between these nuclei is well defined and lies at 35% EL (egg length), the expression border of a gap gene. This border region is about 4-5 nuclei wide and shows a specialized mitotic behaviour.