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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Curr Opin Plant Biol. 2011 Mar 23;14(2):162–167. doi: 10.1016/j.pbi.2011.02.006

Figure 1. Female and Male Gametogenesis.

Figure 1

Top Panel: Haploid megaspore, derived from meiosis, proceeds through three rounds of mitosis. After the last mitosis, cell walls form, creating a seven celled structure: the haploid Egg cell, two synergid cells (SC), three antipodal cells (AC), and diploid central cell nuclei (CCN). Bottom Panel: Haploid microspore, derived from meiosis, proceeds through two rounds of mitosis. After the first round, there is a single cell with two haploid nuclei: vegetative nucleus and the generative nucleus (GN). After the second mitotic event, the generative nucleus divides and forms two haploid sperm cells that remain encapsulated in the vegetative cell (VC).