parthenogenesis

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parthenogenesis

 [pahr″thĕ-no-jen´ĕ-sis]
a modified form of sexual reproduction in which a gamete develops into a new individual without the fertilization of an oocyte by a spermatozoon, as in certain arthropods and other animals; it may occur as a natural phenomenon or be induced by chemical or mechanical stimulation (artificial parthenogenesis). adj., adj parthenogenet´ic.

par·the·no·gen·e·sis

(par'the-nō-jen'ĕ-sis),
A form of nonsexual reproduction, or agamogenesis, in which the female reproduces its kind without fecundation by the male.
[G. parthenos, virgin, + genesis, product]

parthenogenesis

(pär′thə-nō-jĕn′ĭ-sĭs)
n.
1. A form of reproduction in which an unfertilized egg develops into a new individual, occurring commonly among insects and certain other arthropods.
2. The artificial activation of an unfertilized usually mammalian egg, resulting in an embryolike cell cluster from which stem cells can be harvested.

par′the·no·ge·net′ic (-jə-nĕt′ĭk), par′the·no·gen′ic (-jĕn′ĭk) adj.
par′the·no·ge·net′i·cal·ly adv.

parthenogenesis

[pär′thənōjen′əsis]
Etymology: Gk, parthenos, virgin, genesis, origin
a type of nonsexual reproduction in which an organism develops from an unfertilized ovum, as in many simpler animals. The development of the unfertilized ovum may be artificially induced through mechanical or chemical stimulation. Also called unicellular reproduction. parthenogenetic, parthenogenic, adj.

par·the·no·gen·e·sis

(pahr'thĕ-nō-jen'ĕ-sis)
A form of nonsexual reproduction, or agamogenesis, in which the female reproduces its kind without fecundation by the male.
[G. parthenos, virgin, + genesis, product]

parthenogenesis

The development of an unfertilized egg into an adult organism. Virgin birth. This occurs naturally in bees and ants and in some animal species development of an ovum can be induced chemically or by pricking with a fine glass fibre. The result is a clone of the mother cell identical in all respects. Only females can be produced by parthenogenesis, as no Y chromosome is present. If achieved, human parthenogenesis would make men biologically redundant. Very early human embryos derived only from ova have been produced experimentally by a parthenogenetic technique using chemicals that changed the concentration of ions in the ova.

parthenogenesis

the development of an individual from an egg without fertilization by a sperm. The process occurs mainly in lower invertebrates, particularly insects. The egg cell can be HAPLOID (1) to produce, for example, male honeybees (drones) or DIPLOID (1) as produced in wingless female aphids which, during the summer months, produce diploid eggs by MITOSIS that develop into female adults, only forming haploid gametes by MEIOSIS in the autumn prior to normal sexual reproduction.

parthenogenesis

asexual reproduction in which an egg develops without being fertilized by a spermatozoon, as in certain lower animals, especially arthropods; it may occur as a natural phenomenon or be induced by chemical or mechanical stimulation (artificial parthenogenesis).
References in periodicals archive ?
The production of male offspring is an early event in the transition from parthenogenic to sexual reproduction by these organisms.
Many scholars have fought this parthenogenic quality of New Western history.
Although this new nation is neither parthenogenic nor exclusively female it has finally "bred out" all undesirable individuals and cultural habits through the implementation of an accelerated evolutionary process that is at once biological and sociological.
He said: "Stick insects are parthenogenic which means they lay eggs to reproduce, it's a virgin birth.
The North American populations of the balsam woolly adelgid are parthenogenic and very fecund.
In Ever Since Darwin, he identifies the matricide of the cecidomian gall midges during parthenogenic reproduction as "organic wisdom" (91).
The image of parthenogenic virginity, represented by Athene, diverts attention from the patrilineal pre-emption of the Great Goddess, from Zeus' fear of being overpowered by male offspring, and also from the amours of the god, and these associations throw a new light on eroticism and sexuality in the context of the college.
Reproduction in a parthenogenic lizard: with discussion of optimal clutch size and a critique of the clutch weight/body weight ratio.
4) But if this is a paradoxical and problematic sensibility, it also provided a metaphorical opening for a woman in her position: Glasgow eventually looks for ways for the "barren spinster" to be "mother," the mother of words and stories, a mother with parthenogenic powers.
First, injuries resulting in parthenogenic stimulation or polyspermy cannot explain the effect of shear stress on development, because the fertilized eggs usually divide to about the 64-cell stage before degrading.
In effect, in this text, in the moment in which procreation is arrogated by the House of Study with the sixty boys born owing, as it were, to the activity of Torah, the text/culture seems to be straining for an all male parthenogenic ideal, one that would simply erase women.