Another term for macrogamete.
- Such a mutant megagamete could participate in fertilization with wild type pollens and sometimes set aberrant seeds with twin embryos.
- The formation of the female gamete (megagamete or egg cell) can be subdivided into two stages, megasporogenesis and megagametogenesis.
- During sexual megagametophytic development (with the embryo sac as the megagametophyte and the egg cell as megagamete), a sub-epidermal cell of the nucellus tissue differentiates into a megaspore-mother cell which undergoes meiosis I and II to form four megaspores.
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