Nuclear motion is correlated with cell cycle, and the oscillatory behavior is presumably due to an accompanying opposite migration of nuclei towards the posterior of the embryo after nuclei in the cool anterior half undergo a division (Figure S3, Movie S3).
During the gene-duplication process, paralogs commonly undergo a division of labor by retaining different parts (subfunctions) of their original ancestral function.
Duplicate genes that underwent a division of function behave similarly, though due to an increased waiting time for multiple complementary mutations, exhibit a concave pattern of decay in the hazard function before reaching the lower asymptote (Hughes and Liberles 2007; Konrad et al. 2011; Teufel et al. 2014).
The egg then undergoes a cell division.
The micronucleus undergoes a meiotic division and all except one of the resulting daughter nuclei disintegrate.
The germ cell undergoes a further division to form a pair of sperm cells that are suspended within the vegetative cell cytoplasm.
Within the mosquito mid-gut, the male gametocyte undergoes a nuclear division, producing eight flagellated microgametes that will fertilize the female macrogamete.
The asexual oocyte ovulates in the posterior part of the germaria and forms a new follicle where it skips the first meiotic division and undergoes a single maturation division resulting in a discarded polar body and a diploid clonal oocyte.
Oogenesis in Drosophila begins when a germline stem cell (GSC), located at the tip of the germarium, undergoes an asymmetric division, forming a cystoblast and a GSC.
After leaving the host via the feces in environmentally resistant oocysts they undergo a reduction division and mitotic divisions ("sporogony") to yield the infective sporozoites.
Whereas cell division is arrested in the vegetative cell, the generative cell undergoes a second cell division (pollen mitosis II, PMII) leading to two sperm cells.
