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parthenogenesis    
n. 单性生殖,孤雌生殖

单性生殖,孤雌生殖

parthenogenesis
n 1: human conception without fertilization by a man [synonym:
{parthenogenesis}, {parthenogeny}, {virgin birth}]
2: process in which an unfertilized egg develops into a new
individual; common among insects and some other arthropods
[synonym: {parthenogenesis}, {parthenogeny}]

parthenogenesis \par`the*no*gen"e*sis\
(p[aum]r`th[-e]*n[-o]*j[e^]n"[-e]*s[i^]s), n. [Gr. parqe`nos
a virgin E. genesis.]
1. (Biol.) The production of new individuals from virgin
females by means of ova which have the power of developing
without the intervention of the male element; the
production, without fertilization, of cells capable of
germination. It is one of the phenomena of alternate
generation. Cf. {Heterogamy}, and {Metagenesis}.
[1913 Webster]

2. (Bot.) The production of seed without fertilization,
believed to occur through the nonsexual formation of an
embryo extraneous to the embryonic vesicle.
[1913 Webster]


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  • Parthenogenesis - Wikipedia
    In animals, parthenogenesis means the development of an embryo from an unfertilized egg cell In plants, parthenogenesis is a component process of apomixis In algae, parthenogenesis can mean the development of an embryo from either an individual sperm or an individual egg
  • Parthenogenesis | Definition, Types, Facts | Britannica
    Parthenogenesis, a reproductive strategy 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) and rarely among higher vertebrates
  • Parthenogenesis Definition and Examples - Biology Online
    Parthenogenesis is a form of asexual reproduction by self-impregnation resulting in the production of a zygote from an unfertilized egg Thus, it is also referred to by many as “virgin birth” Parthenogenesis takes place in both asexual animals and plants In animals, the embryo develops from an unfertilized egg
  • How some animals have ‘virgin births’: Parthenogenesis explained
    The process, called parthenogenesis, allows creatures from honey bees to rattlesnakes to have so-called “virgin births ” Such events can shock those who care for the animals
  • Explainer: What Is Parthenogenesis And Can It Help Protect Endangered . . .
    Parthenogenesis, which derives from Greek and translates to “virgin birth”, is a type of asexual reproduction in which the offspring of some species develops from the egg or female gamete without first being fertilised by the male gamete
  • Parthenogenesis - Examples, Types, and Significance
    Parthenogenesis is a reproductive process in which a female can produce an embryo without prior fertilization of an egg with sperm Some of the parthenogenesis examples include invertebrates such as ants, wasps, aphids, bees, etc Parthenogenesis in plants is less common than in animals
  • Parthenogenesis - Definition, Types - Biology Notes Online
    This uncommon style of sexual reproduction in which egg development takes place without fertilisation is known as parthenogenesis (Greek: ; parthenos = virgin; = origin) A parthenogenone or parthenote is a parthenogenetic or parthenogenetic creature
  • The Mind-Blowing Process That Allows Asexual Creatures to Reproduce
    Diploid parthenogenesis is the process by which an asexual female produces offspring The two processes involved in this are called Automixis and Apomixis Automixis occurs when leftover cells from parthenogenesis merge with the egg’s preexisting DNA to create a full set
  • Parthenogenesis: What Is A Virgin Birth? - IFLScience
    The word parthenogenesis literally means “virgin creation” in Greek It is a form of asexual reproduction whereby an embryo develops without the need for an egg's fertilization Because of this,
  • Examples and Significance of Parthenogenesis in Animal Kingdom
    Parthenogenesis is a form of asexual reproduction in which offspring are produced from an unfertilized egg, without the involvement of sperm This unique reproductive strategy is observed in a variety of animal species, including invertebrates, reptiles, and some fish





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