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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
  • 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 - GeeksforGeeks
    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
    Parthenogenesis is a reproductive method involving the formation of a female (rarely a male) gamete (sex cell) in the absence of fertilisation It is common in lower plants and invertebrate animals (especially rotifers, aphids, ants, wasps, and bees), but uncommon in higher vertebrates
  • Parthenogenesis: When Female Sharks Reproduce Without a Mate
    Fish, snakes, lizards, and even birds have all been observed to be able to reproduce without fertilization—a phenomenon known as parthenogenesis Asexual reproduction, or the ability of a parent to clone itself to produce offspring, is common for many plants and invertebrates—for example, sea stars
  • Parthenogenesis, explained: How some animals have ‘virgin births . . .
    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
  • The Mind-Blowing Process That Allows Asexual Creatures to Reproduce
    Some animals are able to reproduce without a partner In the animal kingdom, this unique process is known as parthenogenesis
  • Parthenogenesis: what is and examples - Evidence Network
    Parthenogenesis is one of the types of asexual reproduction more striking of the animal kingdom It has been studied for more than 100 years, allowing researchers around the world to discover new characteristics and causes of parthenogenesis
  • Parthenogenesis - Biology Simple
    In parthenogenesis, an egg cell develops into an embryo without fertilization This type of reproduction occurs in many plants, animals, and even some insects In fact, parthenogenesis can occur in both natural and artificial environments Scientists often study it to understand more about genetics and reproduction





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