| Note that migration always changes the state of the entire segment, because a gamete either does or does not migrate. |
| Each of these processes becomes a male gamete termed a microgamete which is equivalent to a mammalian spermatozoon. |
| The formation of the female gamete can be subdivided into two stages, megasporogenesis and megagametogenesis. |
| These are distinguished from nonreproductive adults by the presence of natatory setae and an enlarged medial region for gamete storage. |
| The complete series of events from zygote formation to gamete production constitutes the plant life cycle. |
| The implantation into a human being of an animal gamete or embryo is banned. |
