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ParthenogenesisTaraxacumBoidaeWolbachiaDaphniaApomixisAntsReproductionRanunculaceaeDiploidyReproduction, AsexualRotiferaWaspsMicrosatellite RepeatsAphidsMeiosisRanunculusOvumInsectsSex Determination AnalysisRickettsiaceaeSymbiosisOocytesFertilizationNuclear Transfer TechniquesSex Determination ProcessesSex RatioBiological EvolutionPolyploidyPhylogenyPloidiesHeterozygoteChromosomesHomozygoteSexual Behavior, AnimalBlastocystGenetic VariationSpermatozoa
Somatic cell nucType of asexual reproductionArrhenotokyAsexualApomictic parthenogenesisFacultative parthenogenesisAutomicticGenetically identicalEmbryosSpontaneousApomixisReproduceCondor chicksMeiosisHuman parthenogenesisArtificial parthenogenesisOccursReproductionMalesTurkeysSpermClonesSexuallyParthenogeneticSteinerSpeciesReptilesAnimalsDevelopmentPageDisplayAUTHORPaperStickNewsAsian
Somatic cell nuc2
  • NIH funding for research using hESCs derived from other sources, including somatic cell nuclear transfer, parthenogenesis, and/or IVF embryos created for research purposes, is also prohibited. (nih.gov)
  • No research using stem cells derived from products of Somatic Cell Nuclear Transfer or parthenogenesis, or from embryos created for research purposes using in vitro fertilization, will be eligible for NIH funding. (nih.gov)
Type of asexual reproduction3
  • It's a rare case of parthenogenesis, a type of asexual reproduction, according to the zoo. (wxpr.org)
  • The specific type of asexual reproduction seen in sharks is called automictic parthenogenesis. (wxpr.org)
  • This made the two fatherless condors rare examples of a type of asexual reproduction called parthenogenesis, researchers reported in a new study. (livescience.com)
Arrhenotoky1
  • The production of female offspring by parthenogenesis is referred to as thelytoky (e.g., aphids) while the production of males by parthenogenesis is referred to as arrhenotoky (e.g., bees). (wikipedia.org)
Asexual1
  • Among flatworms with parasitic and commensal modes of existence, parthenogenesis and asexual multiplication appear to be largely confined to the Digenea and Cestoda, the only parasitic platyhelminths that routinely utilize indirect life-cycles. (nih.gov)
Apomictic parthenogenesis3
  • This is called apomictic parthenogenesis. (wikipedia.org)
  • The offspring produced by apomictic parthenogenesis are full clones of their mother. (wikipedia.org)
  • This suggests that parthenogenetic oogenesis in Marmorkrebs exhibits gonomery, a phenomenon commonly found in apomictic parthenogenesis in polyploid animals. (bioone.org)
Facultative parthenogenesis3
  • This is called facultative parthenogenesis (other terms are cyclical parthenogenesis, heterogamy or heterogony). (wikipedia.org)
  • In California Condors facultative parthenogenesis can occur even when a male is present and available for a female to breed with. (wikipedia.org)
  • Facultative Parthenogenesis in California Condors. (discovery.com)
Automictic2
  • In other cases, collectively called automictic parthenogenesis, the ploidy is restored to diploidy by various means. (wikipedia.org)
  • Parthenogenesis is apparently restricted to a minority of adult digeneans and cestodes inhabiting their final hosts, and a survey is made of the particular modes of parthenogenesis (i.e. apomictic, automictic and generative) which are employed by such adults. (nih.gov)
Genetically identical2
  • Based on cytological mechanisms, it can largely be divided into apomixis (ameiotic parthenogenesis) producing genetically identical progeny, and automixis (meiotic parthenogenesis) producing genetically non-identical progeny. (bioone.org)
  • They multiply by parthenogenesis, thus being genetically identical. (europa.eu)
Embryos3
  • Differential development of rabbit embryos derived from parthenogenesis and nuclear transfer. (ox.ac.uk)
  • In conclusion, our study suggests that an effective protocol for parthenogenesis cannot promise a comparable outcome for NT embryos. (ox.ac.uk)
  • Act (42 U.S.C. 289g(b)). (b) For purposes of this section, the term `human embryo or embryos' includes any organism not protected as a human subject unde r 45 CFR Part 46 as of the date of the enactment of this Act, that is derived by fertilization, parthenogenesis, cloning, or any other means from one or more human gametes or human diploid cells. (nih.gov)
Spontaneous2
  • During parthenogenesis, spontaneous embryonic development occurs without fertilization. (livescience.com)
  • 9. Teratocarcinogenesis and spontaneous parthenogenesis in mice. (nih.gov)
Apomixis1
Reproduce2
  • Some species reproduce exclusively by parthenogenesis (such as the bdelloid rotifers), while others can switch between sexual reproduction and parthenogenesis. (wikipedia.org)
  • We are just scratching the surface with parthenogenesis in snakes and lizards that primarily reproduce sexually. (reptilesmagazine.com)
Condor chicks1
  • The condor chicks born via parthenogenesis would be male-only, she added. (livescience.com)
Meiosis5
  • Many other cases of obligate parthenogenesis (or gynogenesis) are found among polyploids and hybrids where the chromosomes cannot pair for meiosis. (wikipedia.org)
  • Parthenogenesis can occur without meiosis through mitotic oogenesis. (wikipedia.org)
  • Parthenogenesis involving meiosis is more complicated. (wikipedia.org)
  • En la partenogénesis se forma un individuo a partir de un ÓVULO no fertilizado que no completó la MEIOSIS. (bvsalud.org)
  • In parthenogenesis, an individual is formed from an unfertilized OVUM that did not complete MEIOSIS . (bvsalud.org)
Human parthenogenesis3
  • IN this brief discussion it is not proposed to seek to evidence a specific instance of human parthenogenesis, the proposition is limited to the possibility of such a case. (thewordfoundation.org)
  • Christmas is the best time of the year to tell people about parthenogenesis, seeing that a story of human parthenogenesis forms a large part of Christmas tradition. (blogspot.com)
  • Human parthenogenesis? (blogspot.com)
Artificial parthenogenesis1
  • In 1930 he switched to silkworm research, for which he won his candidate (1936) and doctoral (1939) degrees, and subsequently developed techniques for artificial parthenogenesis, intraspecific and interspecific androgenesis, and the production of the first artificially produced polyploid animal species. (encyclopedia.com)
Occurs1
  • Parthenogenesis occurs in nature and can be artificially induced. (bvsalud.org)
Reproduction4
  • In parthenogenesis, courtship is absent because only one sex is involved in reproduction. (pearson.com)
  • When a shark undergoes parthenogenesis, "one of the polar bodies that should have been absorbed under normal circumstances of sexual reproduction didn't get reabsorbed and actually acted like a sperm and fused with the cell that was actually going to become an egg," as shark expert Mahmood Shivji told NPR about those earlier cases, back in 2007 . (wxpr.org)
  • The discussion of parthenogenesis involves the general consideration of the reproductive function and the brief survey only possible here may, nevertheless, afford a sufficiently comprehensive and correct view of the specific form of reproduction giving interest in this study. (thewordfoundation.org)
  • They are one of the few vertebrates capable of parthenogenesis, or reproduction without mating. (brighthub.com)
Males2
  • The switch between sexuality and parthenogenesis in such species may be triggered by the season (aphid, some gall wasps), or by a lack of males or by conditions that favour rapid population growth (rotifers and cladocerans like Daphnia). (wikipedia.org)
  • In parthenogenesis, males and females each contribute half of the genetic material for the next generation. (pearson.com)
Turkeys1
  • It's rare but not unheard of in reptiles and fish, and while scientists have documented parthenogenesis in domesticated birds such as turkeys and chickens, this is the first example of a "virgin birth" producing viable chicks in a population of wild condors. (livescience.com)
Sperm1
  • In algae, parthenogenesis can mean the development of an embryo from either an individual sperm or an individual egg. (wikipedia.org)
Clones2
  • In some types of parthenogenesis the offspring having all of the mother's genetic material are called full clones and those having only half are called half clones. (wikipedia.org)
  • DNA fingerprinting proved that their offspring (all female, since they are virtual clones of their mothers) were conceived through parthenogenesis. (brighthub.com)
Sexually1
  • Some species can produce both sexually and through parthenogenesis, and offspring in the same clutch of a species of tropical lizard can be a mix of sexually produced offspring and parthenogenically produced offspring. (wikipedia.org)
Parthenogenetic1
  • Polyploidy is common in parthenogenetic species, although the association between parthenogenesis and polyploidy throughout evolution is poorly understood. (bioone.org)
Steiner1
  • moment, when we figured out that parthenogenesis was a possibility," Steiner said. (livescience.com)
Species3
  • Parthenogenesis does not apply to isogamous species. (wikipedia.org)
  • In species subject to high demographic fluctuations the best strategy depends on the ability to predict the time of occurrence of the population bottleneck: if predictable, the best strategy is the alternation of generations, if not, permanent parthenogenesis. (scirp.org)
  • If the invertebrate research doesn't pan out, perhaps vertebrate species known to exhibit parthenogenesis? (fanfiction.net)
Reptiles1
  • Parthenogenesis is well documented in insects and reptiles, and it's been seen in birds and fish. (wxpr.org)
Animals1
  • In animals, parthenogenesis means development of an embryo from an unfertilized egg cell. (wikipedia.org)
Development1
  • Our results demonstrate that, during parthenogenesis, activation through either electrical pulses or chemical stimulation alone resulted in low cleavage rates and compromised development. (ox.ac.uk)
Page1
  • The complete paper, 'Parthenogenesis in a captive Asian water dragon ( Physignathus cocincinus ) identified with novel microsatellites' can be read on the PLOS One journal web page . (reptilesmagazine.com)
Display1
  • An epaulette shark pup that hatched from an apparent parthenogenesis is now on display at Brookfield Zoo, in a Chicago suburb. (wxpr.org)
AUTHOR1
  • These scientific discoveries are always very exciting, and having the opportunity to confirm parthenogenesis at all is really cool," Kyle Miller, animal keeper at the Reptile Discovery Center and lead author on the paper said in the press release. (reptilesmagazine.com)
Paper1
  • The British Medical Journal (or BMJ ) has a new paper out that looks closely at reports of parthenogenesis in humans. (blogspot.com)
Stick1
  • Convergent consequences of parthenogenesis on stick insect genomes. (unil.ch)
News1
  • That's the topic of a story in the current edition of Chemical & Engineering News (C&EN), the weekly magazine of the American Chemical Society (ACS), the world's largest scientific society. (phys.org)
Asian1
  • After looking through our Asian water dragon's records, I immediately suspected parthenogenesis. (kingsnake.com)