Immediately after fertilization of a Drosophila egg,the zygote nucleus undergoes a series of divisions.Subsequent nuclear migration generates an_______. A)homeodomain B)cleavage nucleus C)zygote D)syncytium E)maternal effect

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After fertilization, the Drosophila egg undergoes rapid and synchronous cell divisions without cytokinesis, resulting in a multinucleate cytoplasmic mass called a syncytium. The zygote nucleus quickly undergoes several divisions, and the resulting nuclei migrate to the periphery of the egg, where they undergo further synchronous mitotic divisions to generate the syncytial blastoderm. Therefore, choice D (syncytium) is the best answer. Choices A (homeodomain), B (cleavage nucleus), C (zygote), and E (maternal effect) are not accurate descriptions of this process.

Immediately After Fertilization of a Drosophila Egg,the Zygote Nucleus Undergoes