Mostrando 101 - 120 Resultados de 385 Para Buscar '"parthenogenesis"', tiempo de consulta: 0.10s Limitar resultados
  1. 101
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    Blastomere aggregation using phytohemagglutinin-L improves the establishment efficiency of porcine parthenogenesis-derived embryonic stem-like cell lines
  2. 102
    “…Triploid apomictic parthenogenesis might represent an exception, as in favorable environments, triploid females are able to produce rare males and diploid females. …”
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    Evolutionary Potential of Parthenogenesis—Bisexual Lineages within Triploid Apomictic Thelytoky in Cacopsylla ledi (Flor, 1861) (Hemiptera, Psylloidea) in Fennoscandia
  3. 103
    “…The molecular basis for aphid parthenogenesis is unknown. Cytological observations of aphid parthenogenesis suggest that asexual oogenesis evolved either through a modification of meiosis or from a mitotic process. …”
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    Gene Expression Analysis of Parthenogenetic Embryonic Development of the Pea Aphid, Acyrthosiphon pisum, Suggests That Aphid Parthenogenesis Evolved from Meiotic Oogenesis
  4. 104
    “…However, there is limited knowledge regarding the genetic and molecular mechanisms that regulate parthenogenesis. RESULTS: Here, in a transcriptional comparison between pollination-dependent fruit and GA(4)-induced parthenocarpy, PbCYP78A6 was identified and proposed as a candidate gene involved in parthenocarpy. …”
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    Downstream of GA(4), PbCYP78A6 participates in regulating cell cycle-related genes and parthenogenesis in pear (Pyrus bretshneideri Rehd.)
  5. 105
    por Angus, Robert B., Jia, Fenglong
    Publicado 2020
    “…Parthenogenesis is suspected in Helophorus aquila Angus et al., 2014, from northern Qinghai (China), which should be verified in further studies.…”
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    Triploidy in Chinese parthenogenetic Helophorus orientalis Motschulsky, 1860, further data on parthenogenetic H. brevipalpis Bedel, 1881 and a brief discussion of parthenogenesis in Hydrophiloidea (Coleoptera)
  6. 106
    “…In both the chemically defined and the complex medium (Medium-199 + porcine follicular fluid), oocytes derived from the GA and AG treatments presented significantly higher blastocyst rates than the control after parthenogenesis (PA) and somatic cell nuclear transfer (SCNT). …”
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    Effect of D-Glucuronic Acid and N-acetyl-D-Glucosamine Treatment during In Vitro Maturation on Embryonic Development after Parthenogenesis and Somatic Cell Nuclear Transfer in Pigs
  7. 107
    “…In this generation, clear segregation was observed between diplospory and parthenogenesis. Analysis of the BC(1) population suggests that diplospory and parthenogenesis are each controlled by single dominant genes, D and P, respectively. …”
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    Modes of inheritance of two apomixis components, diplospory and parthenogenesis, in Chinese chive (Allium ramosum) revealed by analysis of the segregating population generated by back-crossing between amphimictic and apomictic diploids
  8. 108
    Publicado 1849
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    On Parthenogenesis, or the Successive Production of Procreating Individuals from a Single Ovum. A Discourse Introductory to the Hunterian Lectures on Generation and Development, for the Year 1849, Delivered at the Royal College of Surgeons of England
  9. 109
    “…Parthenogenesis in animals is often associated with polyploidy and restriction to extreme habitats or recently deglaciated areas. …”
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    Extensive variation in chromosome number and genome size in sexual and parthenogenetic species of the jumping-bristletail genus Machilis (Archaeognatha)
  10. 110
    “…In some subsocial and eusocial insects, parthenogenesis is often more prevalent than sexual reproduction. …”
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    Group-housed females promote production of asexual ootheca in American cockroaches
  11. 111
    “…This reproductive strategy has never been detected in the genus Medicago, but features of apomixis, such as restitutional apomeiosis and haploid parthenogenesis, have been reported. By means of an original case study, we demonstrated that sexually tetraploidized plants maintain apomeiosis, but this trait is developmentally independent from parthenogenesis. …”
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    A Review of Unreduced Gametes and Neopolyploids in Alfalfa: How to Fill the Gap between Well-Established Meiotic Mutants and Next-Generation Genomic Resources
  12. 112
    “…However, demographic advantages linked to parthenogenesis as the sole mode of reproduction are also possible. …”
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    Genetically Depauperate and Still Successful: Few Multilocus Genotypes of the Introduced Parthenogenetic Weevil Naupactus cervinus (Coleoptera: Curculionidae) Prevail in the Continental United States
  13. 113
    “…The reasons for this are probably a combination of lineage-specific patterns, the impact of the origin of parthenogenesis, and a survivorship bias of parthenogenetic lineages.…”
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    Genomic Features of Parthenogenetic Animals
  14. 114
    “…SIMPLE SUMMARY: Parthenogenesis is an asexual type of reproduction that usually occurs in thrips. …”
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    Thelytokous Reproduction of Onion Thrips, Thrips tabaci Lindeman 1889, Infesting Welsh Onion and Genetic Variation among Their Subpopulations
  15. 115
    “…These findings could also help to explain the rarity of facultative parthenogenesis in animals. This article is part of the theme issue ‘Linking local adaptation with the evolution of sex differences'.…”
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    The geography of sex: sexual conflict, environmental gradients and local loss of sex in facultatively parthenogenetic animals
  16. 116
    “…Lineage A was almost degenerated to parthenogenesis and lineage B had a trend to parthenogenesis, which suggested that parthenogenesis could be an internal factor that influenced the differentiation and dispersal of A. triastriatus. …”
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    Population Genetic Structure Reveals Two Lineages of Amynthas triastriatus (Oligochaeta: Megascolecidae) in China, with Notes on a New Subspecies of Amynthas triastriatus
  17. 117
    “…Many species, including the pea aphid, also show variation in their reproductive mode at the population level, with some lineages reproducing by cyclical parthenogenesis and others by permanent parthenogenesis. …”
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    Facultative Symbiont Infections Affect Aphid Reproduction
  18. 118
    “…Artificial activation of oocytes is an important step for successful parthenogenesis and somatic cell nuclear transfer (SCNT). …”
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    Optimal Treatment of 6-Dimethylaminopurine Enhances the In Vivo Development of Canine Embryos by Rapid Initiation of DNA Synthesis
  19. 119
    “…It appears likely that the capacity of thelytokous parthenogenesis evolved once in the Termes group, and may ultimately be found more widely, well beyond these Neotropical species. …”
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    Widespread occurrence of asexual reproduction in higher termites of the Termes group (Termitidae: Termitinae)
  20. 120
    “…Hence, males in these populations are nonfunctional and do not contribute to the genetic constitution of the population, but appear in every generation as reversals from apomictic parthenogenesis and the mode of parthenogenesis is of obligatory type.…”
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    Meiosis in rare males in parthenogenetic Cacopsylla myrtilli (Wagner, 1947) (Hemiptera, Psyllidae) populations from northern Europe
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