/par'theuh noh jen"euh sis/, n. Biol.development of an egg without fertilization.[1840-50; PARTHENO- + GENESIS]
* * *biological reproduction that involves development of a female (rarely a male) gamete (sex cell) without fertilization. It occurs commonly among lower plants and invertebrate animals, particularly rotifers, aphids, ants, wasps, and bees. An egg produced parthenogenetically may be either haploid (i.e., with one set of dissimilar chromosomes) or diploid (i.e., with a paired set of chromosomes).
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