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Dissertations / Theses on the topic 'Zygota'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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1

Jelínková, Pavla. "Histonový kód a jeho regulace během časného embryonálního vývoje prasete." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259245.

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Both pronuclei of the zygote undergo epigenetic changes after fertilization, which determines the quality of the zygote and successful early mammalian embryonic development. Shortly after fertilization epigenetic asymmetry among the pronuclei of the zygote is evident, while the paternal pronucleus undergoes active DNA demethylation, the DNA of the maternal pronucleus remains methylated. The male pronucleus in addition undergoes histone acetylation, whereas the histones of the female pronucleus remain methylated. Asymmetry of pronuclei and their epigenetic status predicts successful reprogrammi
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2

Maryníková, Veronika. "Úloha sirtuinů během formace prvojader po in vitro oplození prasečích oocytů." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-259246.

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Recently, the increasing importance of reproductive biotechnologies rises. They provide us to get higher performance of livestock or to improve treatment in human medicine. It is neccessary to have a sufficient amount of developmentaly competent oocytes and further healthy liveable embryos for in vitro culture to supply a progress of reproductive technologies. Immediately after fertilization, pronucleus formation is a key moment for further embryonicdevelopment. Male and female pronuclei have their own pattern of histone code. For development of early embryo, it is neccessary to supply the cor
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3

ROEGIERS, FABRICE. "Reorganisations corticales et cytoplasmiques du zygote d'ascidie." Nice, 1999. http://www.theses.fr/1999NICE5286.

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Depuis plus d'un siecle, le developpement determine des ascidies lie a la presence de domaines cytoplasmiques visibles dans leurs ufs et embryons ont attire l'attention des embryologistes. L'un de ces domaines, le myoplasme, une zone sous corticale riche en mitochondries confere aux blastomeres qui en herite la capacite de se developper en cellules musculaires. Nous avons analyse les evenements et phases successives de formation et de reorganisation des domaines cytoplasmiques et corticaux entre la fecondation et la premiere division dans l'ascidie phallusia mammillata. Le spermatozoide fecond
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4

Ventín, Palacín Ramón. "Tratamiento de la enfermedad periodontal severa con Zigoma Quad en un solo tiempo quirúrgico, bajo carga inmediata y evaluación de la calidad de vida asociada." Doctoral thesis, Universitat de Lleida, 2019. http://hdl.handle.net/10803/667900.

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Objectius: El propòsit d'aquest estudi és quantificar l'impacte en la qualitat de vida de pacients amb periodontitis avançades, sotmesos a rehabilitació de maxil•lar superior amb quatre implants zigomàtics, sota un protocol de càrrega quirúrgica immediata i en un sol temps quirúrgic amb anestèsia local i sedació conscient. Material i mètodes: seixanta-quatre pacients edèntuls i parcialment edèntuls de maxil•lar superior són sotmesos a un tractament amb quatre implants zigomàtics per pacient, (n = 256 Implants) sent avaluada la qualitat de vida associada a la salut bucodental abans i sis mesos
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5

Algazeery, Ahmed. "La Yemanucléine de Drosophile est nécessaire à la méiose ovocytaire et l’assemblage de la chromatine paternelle dans le zygote." Thesis, Montpellier 1, 2013. http://www.theses.fr/2013MON1T034/document.

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La reproduction sexuée repose sur deux processus fondamentaux : la méiose qui permet la formation des gamètes dont le génome est haploïde et la syngamie qui permet, après fécondation, de restaurer la diploïdie par fusion des deux noyaux parentaux haploïdes. Alors que la méiose repose respectivement sur le génome maternel pour l'ovocyte et paternel pour le spermatozoïde, la restauration de la diploïdie dans le zygote repose exclusivement sur le génome maternel. Si un pronucleus maternel compétent pour la réplication est formé au terme de la méiose ovocytaire, le génome paternel quant à lui, n'a
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6

Phillips, Jennifer Barber. "Spatio-temporal regulation of microtubule stability in the Caenorhabditis elegans zygote /." view abstract or download file of text, 2003. http://wwwlib.umi.com/cr/uoregon/fullcit?p3113023.

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Thesis (Ph. D.)--University of Oregon, 2003.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 75-80). Also available for download via the World Wide Web; free to University of Oregon users.
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7

Caspar, Philippe. "La Saisie du zygote humain par l'esprit : destin de l'ontogenèse aristotélicienne /." Paris : Namur : Lethielleux ; Culture et vérité, 1987. http://catalogue.bnf.fr/ark:/12148/cb349700587.

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8

Arney, Katharine Luisa. "Epigenetic modification in the mouse zygote and regulation of imprinted genes." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620401.

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9

Corellou, Florence. "Cycle cellulaire et polarisation du zygote de fucus regulations et interactions." Rennes 1, 2000. http://hal.upmc.fr/tel-01115123.

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L'orchestration correcte de la differenciation et du cycle cellulaire est necessaire au developpement de tout organisme. Chez les vegetaux, il n'existe que peu de donnees sur les mecanismes moleculaires mis en jeu pour coordonner ces deux evenements. Le zygote de l'algue brune fucus est un modele de l'embryogenese precoce des vegetaux. La polarisation du zygote de fucus s'effectue apres la fecondation et coincide avec le premier cycle cellulaire mitotique. Des acteurs moleculaires impliques dans la polarisation zygotique ont ete identifies mais les voies de transduction controlant l'etablissem
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10

Delabaere, Laetitia. "Réplication, condensation et division des chromosomes parentaux dans le zygote de drosophile." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10280/document.

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Chez les animaux, la conformation unique du noyau du spermatozoïde dont la chromatine est organisée avec des protéines chromosomiques spécifiques telles que les protamines le rend totalement inactif. Le remodelage de la chromatine paternelle à la fécondation par des activités d'origine maternelle sont donc des processus essentiels à la formation d'un embryon diploïde, dont les mécanismes restent très mal connus. Lors de ma thèse j'ai essayé de mieux comprendre ces processus par l'étude, chez la drosophile, d'un mutant létal embryonnaire à effet maternel : maternal haploid (mh). Ce mutant affec
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11

Small, Lawrence Edward. "PAR Proteins Regulate CDC-42-Dependent Myosin Dynamics During C. elegans Zygote Polarization." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461086954.

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12

Ni, Chun-Lun. "Polyglutamine Tract Expansion Increases Protein S-Nitrosylation and the Budding Yeast Zygote Transcriptome." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1481200808487517.

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13

Love, John. "Calmodulin during photopolarisation of Fucus serratus zygotes." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/12473.

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Zygotes of the Fucales (Phaeophyceae) have been widely used as a model system to study plant cell polarity. Zygotes in the early stages of development are apolar. During the first cell cycle, a gradual cytoplasmic re-organisation, oriented by numerous environmental stimuli, replaces the initial spherical symmetry by a highly polarised morphology. Gradients of cytoplasmic free Ca<SUP>2+</SUP> and of the Ca<SUP>2+</SUP> binding protein, calmodulin, have been observed in the growing tips of polarised plant cells such as root hairs and pollen tubes. Moreover, calmodulin is essential for budding in
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14

Razzaghian, Hamid Reza. "Post-zygotic Genetic Variation in Health and Disease." Doctoral thesis, Uppsala universitet, Medicinsk genetik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-196217.

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Post-zygotic genetic variation has previously been shown in healthy individuals and linked to various disorders. The definition of post-zygotic or somatic variation is the existence of genetically distinct populations of cells in a subject derived from a single zygote. Structural changes in the human genome are a major type of inter-individual genetic variation and copy number variation (CNV), involving changes in the copy number of genes, are one of the best studied category of structural genetic changes. In paper I we reported a pair of healthy female monozygotic (MZ) twins discordant for an
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15

Pieters, Mathieu Hubertus Egidius Cornelus. "Cytogenetic studies of human gametes, zygotes and preembryos." Maastricht : Maastricht : Rijksuniversiteit Limburg ; University Library, Maastricht University [Host], 1991. http://arno.unimaas.nl/show.cgi?fid=5643.

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16

Bander, S. A. A. "Pre-zygotic interactions in mice : A genetic analysis." Thesis, University of Essex, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380568.

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17

Patil, Harshal [Verfasser], and Michael [Akademischer Betreuer] Lanzer. "Studies on Zygote Morphogenesis in rodent Malaria parasite, Plasmodium berghei / Harshal Patil ; Betreuer: Michael Lanzer." Heidelberg : Universitätsbibliothek Heidelberg, 2015. http://d-nb.info/1180502620/34.

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18

Berger, Frédéric. "Quelques aspects de la biologie cellulaire du développement précoce (polarisation, embryogenèse) du zygote de Fucus." Lyon 1, 1994. http://www.theses.fr/1994LYO1T310.

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19

Muller, Samantha. "Shape analysis of the zygoma to assess ancestry and sex variation in modern South Africans." Diss., University of Pretoria, 2021. http://hdl.handle.net/2263/78395.

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Skeletal remains exposed to an outdoor context are prone to post-mortem damage and fragmentation, making skeletal analysis difficult for the anthropologist. Research on ancestry and sex from isolated fragments of the cranium is necessary to improve identification of fragmented remains. The zygoma has proven to be more durable post skeletonization than other cranial bones, making research relevant into variation within the zygoma. Whilst the shape of the zygoma has been studied in a South African population using morphological, metric and geometric morphometric techniques, these studies did not
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20

Timlin, Claire. "Strategies for Improving Reproductive Efficiency of Beef Cattle with Assisted Reproductive Technologies." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/98841.

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Reproductive efficiency in beef cattle can be improved with reproductive technologies at the herd, individual cow, and embryonic levels. Decreasing the bull:cow ratio for natural service after fixed time artificial insemination (FTAI) can alleviate economic burden associated with FTAI. In experiment 1, the total number of cows exposed per bull was negatively correlated with pregnancy rate to natural service on first return to estrus after FTAI in fall herds. The number of open cows per bull in fall herds using one natural service sire was negatively correlated with pregnancy rate on first retu
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21

Timlin, Claire Lourdine. "Strategies for Improving Reproductive Efficiency of Beef Cattle with Assisted Reproductive Technologies." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/98841.

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Reproductive efficiency in beef cattle can be improved with reproductive technologies at the herd, individual cow, and embryonic levels. Decreasing the bull:cow ratio for natural service after fixed time artificial insemination (FTAI) can alleviate economic burden associated with FTAI. In experiment 1, the total number of cows exposed per bull was negatively correlated with pregnancy rate to natural service on first return to estrus after FTAI in fall herds. The number of open cows per bull in fall herds using one natural service sire was negatively correlated with pregnancy rate on first retu
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22

Uraji, Julia [Verfasser]. "Mechanisms of pronuclear migration in mammalian zygotes / Julia Uraji." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2019. http://d-nb.info/1216330530/34.

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23

Tawha, Tafadzwa Primrose Rudo. "Assessing the accuracy of the zygoma for estimating ancestry using geometric morphometrics in a South African sample." Master's thesis, Faculty of Health Sciences, 2019. http://hdl.handle.net/11427/31282.

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The large number of unidentified, decomposed and skeletonised remains found in South Africa (SA) necessitates relevant and reliable methods to assist in victim identification. Ancestry estimation from unknown skeletal remains is essential when reconstructing a demographic profile of a missing person. In the SA population, estimating ancestry is problematic as standards developed internationally rarely apply to the local, biologically heterogenous population. Craniofacial morphology is known to be ancestrally distinct and studies are yet to explore shape and size variation in the zygomatic bone
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24

Shah, Sheetal Mansukhlal. "Genetic and molecular studies of segmentation and axon guidance in Drosophila." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312177.

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25

Trimble, Leah M., and Richard A. Fluck. "Indicators of the dorsoventral axis in medaka (Oryzias latipes) zygotes." Laboratory of Freshwater Fish Stocks Bioscience Center Nagoya University, 1995. http://hdl.handle.net/2237/13801.

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26

Papadopoulos, George. "Chromosome anomalies in human lymphocytes, oocytes, zygotes and preimplantation embryos." Thesis, University of Aberdeen, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278882.

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Chromosome aberrations are very important in human life because they can lead to disease or death. They have three important dimensions, formation, transmission and effect. They may occur spontaneously or be induced by physical or chemical agents. Human reproductive failure is characterised by a high rate of spontaneous chromosome anomalies while chromosome aberrations in human cancers are in most cases induced. In a proliferating cell system chromosome aberrations may be eliminated or transmitted for one or more cell divisions. In the former case the daughter cells may revert to normality or
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27

Meaders, Johnathan Lee. "Growth, Morphology, and Positioning of Microtubule Asters in Large Zygotes:." Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:109018.

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Thesis advisor: David R. Burgess<br>Microtubule (MT) asters are radial arrays of MTs nucleated from a microtubule organizingcenter (MTOC) such as the centrosome. Within many cell types, which display highly diverse size and shape, MT asters orchestrate spatial positioning of organelles to ensure proper cellular function throughout the cell cycle and development. Therefore, asters have adopted a wide variety of sizes and morphologies, which are directly affects how they migrate and position within the cell. In large cells, for example during embryonic development, asters growth to sizes on the
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28

Mateo, Cuadros Sílvi. "Zigots monopronucleats: origen, desenvolupament i constitució cromosòmica." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/461590.

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L’observació de zigots amb un únic pronucli (PN) idos corpuscles polars (CP) en el moment de la valoració de la fecundació es dóna entre el 3%-6% deis oocits inseminats mitjanant injecció intracitoplasmatica d’un espermatozoide (ICSI). La incertesa sobre el destí que se’ls ha de donar fa necessari un estudi del potencial reproductiu que poden tenir els embrions que se’n deriven. Així mateix, cal coneixer els riscos que poden derivar de la seva utilització. Per aquestes raons,eltreball realitzat durant aquesta tesi doctoral ha estat centrat en l’estudi de la constitució cromosomica i el desenvo
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Seguin, Diane G. "Short-term recovery from a volume increase in the mouse zygote, characteristics of regulatory volume decrease in vitro." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0015/MQ48180.pdf.

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Séguin, Diane G. "Short-term recovery from a volume increase in the mouse zygote: Characteristics of regulatory volume decrease in vitro." Thesis, University of Ottawa (Canada), 2000. http://hdl.handle.net/10393/9230.

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Mouse zygotes have been shown to recover from an imposed increase in volume, a process known as a regulatory volume decrease or RVD, via separate but functionally coupled Cl- and K+ channels. The objectives of this thesis were to further determine some of the characteristics of these Cl- and K+ channels involved in RVD in the mouse zygote. It was proposed that the Cl - channel in mouse zygotes was a swelling-activated Cl -/organic osmolyte channel like that found in many other cells. A method developed by Passantes-Morales et al. (1993) was used, in which a large extracellular concentration of
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31

Wojtowicz, Elizabeth Pfennig Karin S. "Pre and post zygotic fitness components of hybridization in spadefoot toads." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2009. http://dc.lib.unc.edu/u?/etd,2313.

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Thesis (M.S.)--University of North Carolina at Chapel Hill, 2009.<br>Title from electronic title page (viewed Jun. 26, 2009). "... in partial fulfillment of the requirements for the degree of Master of Science in the Department of Biology. " Discipline: Biology; Department/School: Biology.
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Tzima, Sofia. "ZYGOS : une revue d'art en Grèce (1955-1966)." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAG030.

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Cette thèse se propose d’étudier le discours de la revue grecque d’art Zygos (« Balance ») et son rôle dans la réception et la promotion de mouvements artistiques et dans la diffusion de courants idéologiques en Grèce. L’étude des textes de Zygos révèle l’opposition « grécité – modernisme » comme thème central du discours de la revue. Notre conclusion principale est que Zygos a manifesté un engagement mesuré dans la modernité, en réconciliant le modernisme avec le désir de particularité grecque. Nous constatons la présence d’un discours sur l’art moderne conçu comme une évolution de Cézanne à
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33

Lucas, Tanguy. "Spatio-temporal regulation of hunchback during the zygotic genome activation in Drosophila." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066707.

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Les gradients morphogénétiques contrôlent l'émergence de polarités axiales au cours du développement. Bien que la dynamique d'établissement de ces gradients soit bien comprise, la précision des mécanismes d'activation agissant en aval restent à élucider. Nous abordons cette question avec le gradient de Bicoid qui fournit rapidement une réponse transcriptionnelle robuste dans l'embryon de drosophile. Cette robustesse survient malgré le challenge imposé par de fréquentes mitoses dépourvues de transcription. Un calcul théorique intégrant les paramètres physiques de Bicoid (concentration, diffusio
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34

Siméon, Amandine. "Localisations et rôles des polysaccharides de paroi au cours du développement de deux modèles d’algues brunes : le zygote de Fucus et Ectocarpu." Electronic Thesis or Diss., Sorbonne université, 2018. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2018SORUS233.pdf.

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La paroi des algues brunes constitue un compartiment cellulaire majeur impliqué dans de nombreuses réponses physiologiques dont la croissance cellulaire, le développement, ou encore dans l’adaptation aux variations physico-chimiques de l’environnement. Tout comme d’autres organismes photosynthétiques (plantes, algues rouges et vertes), les algues brunes ont une paroi essentiellement composée de polysaccharides, mais compte-tenu des distances phylogénétiques, les composés sont distincts, avec nottament des alginates et des fucanes sulfatés. La majorité des connaissances sur ces compositions dér
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35

Hu, Wanqi. "The early zygotic genes and microRNAs in the yellow fever mosquito Aedes aegypti and the Asian malaria mosquito Anopheles stephensi." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/70857.

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Mosquitoes are notorious vectors for multiple diseases like malaria, yellow fever and dengue fever. To manipulate gene expression in mosquito and spread desired genes among natural population for vector control, a thorough understanding of mosquito development and gene regulation is critical. Early embryogenesis is a rapid, complex yet crucial process in the very beginning of development. Previous research in other species indicated genes transcribed that early evolved fast and played essential roles. The study of mosquito early zygotic genes (EZGs) would offer unique insights into mosquito ge
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Tong, Jiangen. "Effects of chilling on the physiology and development of mouse oocytes and zygotes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0034/MQ47368.pdf.

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Schneider, Patricia Neiva Coelho. "Role for the Axin-RGS domain during embryonic development: maternal vs. zygotic functions." Diss., University of Iowa, 2010. https://ir.uiowa.edu/etd/598.

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Upon sperm entry, the vertebrate egg undergoes a series of cell divisions that create a number of smaller cells without increasing the embryonic mass. This induces an elevation of intracellular calcium transient that is conserved across species. In zebrafish, fertilization occurs through an opening in the chorion, the micropyle and in Xenopus it can occur anywhere in the animal hemisphere. Wnt signaling activation is required during dorsal-ventral axis specification and it needs to be suppressed during the regionalization of the brain. Axin is a negative regulator of Wnt signaling and contains
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Toyoshima, Megumi. "Transcription independent suppression of DNA synthesis by p53 in sperm irradiated mouse zygotes." Kyoto University, 2005. http://hdl.handle.net/2433/144759.

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Vuosku, J. (Jaana). "A matter of life and death - polyamine metabolism during zygotic embryogenesis of pine." Doctoral thesis, Oulun yliopisto, 2011. http://urn.fi/urn:isbn:9789514294365.

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Abstract The study gathered information about polyamine metabolism throughout the Scots pine (Pinus sylvestris L.) zygotic embryogenesis and about physiological events occurring simultaneously in the megagametophyte tissue. Additionally, novel sequence data of the Scots pine polyamine genes were used for studying the evolution of polyamine genes in plants. Phylogenetic analyses revealed that the eukaryotic ornithine decarboxylase (ODC) might have evolved from a multifunctional bacterial progenitor. In conifers, the alternative arginine decarboxylase (ADC) pathway is preferred in putrescine bio
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40

Scanga, Vanessa Immacolata. "In vivo zygotic- and maternal-effect characterization of the Drosophila melanogaster gene, tango." Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/10602.

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This study involved the in vivo phenotypic characterization of the Drosophila melanogaster gene tango (tgo) through classification of both its zygotic-effect during CNS development and maternal-effect during early embryonic patterning. Particularly, this study involved characterization of the prd-repeat domain of the Tango protein, or its allelic equivalent, tgo 3. tgo has been previously isolated as a bHLH-PAS nuclear transcription factor required in the regulation of CNS development through its dimerization of the CNS master transcriptional regulatory gene, single-minded. Having performed a
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au, M. Wheeler@murdoch edu, and Margaret Wheeler. "Reproductive and Molecular Biology of Eucalyptus marginata." Murdoch University, 2004. http://wwwlib.murdoch.edu.au/adt/browse/view/adt-MU20040723.140250.

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This thesis examined aspects of the reproductive and molecular biology of Eucalyptus marginata (jarrah). The aims were to develop protocols for controlled pollination, that could be used in clonal orchard trees to breed jarrah seedlings that have a known genetic resistance to Phytophthora cinnamomi (dieback), for use in rehabilitation after mining and logging. An intimate knowledge of the breeding biology of jarrah was necessary to achieve this aim. The project also aimed to increase knowledge of the genetic diversity and structure of jarrah, in order to make informed decisions regarding the c
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Ozkurt, Zeynep. "Induction Of Embryogenic Tissue From Immature Zygotic Embryos In Pinus Nigra Subspecies Pallasiana Lamb." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607615/index.pdf.

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Cloning of trees using somatic embryogenesis could have a major impact on tree breeding and commercial plantation forestry. To initiate somatic embryogenesis in Anatolian black pine (Pinus nigra Arnold. subspecies pallasiana), one-year old cones containing immature seeds were collected from eight trees located in METU campus, Ankara. Embryogenic tissues were derived from immature zygotic embryos excised from the seeds. The zygotic embryos at the time of collection were at the precotyledonary stage of development. For this study, Douglas-fir cotyledon revised medium (DCR) supplemented with 13.6
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Santanen, Arja. "Polyamine metabolism during development of somatic and zygotic embryos of Picea abies (Norway spruce)." Helsinki : University of Helsinki, 2000. http://ethesis.helsinki.fi/julkaisut/mat/bioti/vk/santanen/.

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44

Hess, J. Richard. "Wheat Kernel Hormone Levels During Development and Their Relevance to Zygotic and Somatic Embryogenesis." DigitalCommons@USU, 1992. https://digitalcommons.usu.edu/etd/3408.

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Wheat (Triticum aestivum L.) zygotic embryogenesis occurs in a dynamically regulated ovular environment, and in ovulohormones regulate embryogenic processes. Levels of ABA, IAA, and the cytokinins Z, ZR, DHZ, DHZR, iP, and iPA were studied in developing wheat kernels from anthesis to maturity . High cytokinin and low IAA and ABA levels were associated with the early stage of embryo formation and active tissue histodifferentiation. Following histodifferentiation, cytokinin levels declined while IAA accumulated throughout the stage of active grain growth and then declined with grain maturity. AB
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45

Rinonos, Serendipity Zapanta. "OVERT AND LATENT PATHWAYS OF POLARITY SPECIFICATION IN ZYGOTES: THE HAPLOID-TO-DIPLOID TRANSITION." Case Western Reserve University School of Graduate Studies / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=case1354902108.

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46

Cossiello, Raquel Di Falco. "Efeito de quatro diferentes meios de cultura na qualidade morfologica de zigotos e embriões." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/308505.

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Orientador: Carlos Alberto Petta<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-14T05:22:09Z (GMT). No. of bitstreams: 1 Cossiello_RaquelDiFalco.pdf: 3774222 bytes, checksum: 96b4cbfa6f25f58d8240f552b5c83617 (MD5) Previous issue date: 2009<br>Resumo: Objetivo: comparar os efeitos de quatro diferentes meios de cultura na morfologia dos zigotos e embriões. Materiais e métodos: estudo retrospectivo conduzido no Centro de Reprodução Humana de Campinas, em que 2.289 embriões de 319 ciclos de ICSI foram avaliados
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Placentino, Maria [Verfasser]. "Characterization of parental and zygotic contributions to siRNA mediated silencing in C. elegans / Maria Placentino." Mainz : Universitätsbibliothek Mainz, 2019. http://d-nb.info/118923615X/34.

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48

Ryu, Junghyun. "The direct injection of CRISPR/Cas9 system into porcine zygotes for genetically modified pig production." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/101763.

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The pig has similar features to the human in aspects such as physiology, immunology, and organ size. Because of these similarities, genetically modified pigs have been generated for xenotransplantation. Also, when using the pig as a model for human diseases (e.g. cystic fibrosis transmembrane conductance regulator), the pig exhibited similar symptoms to those that human patients present. The main goal of this work was to examine the efficacy of direct injection of the CRISPR/Cas9 system (clustered regularly interspaced short palindromic repeats/ CRISPR associated protein 9) in pigs and to over
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Stanney, William J. III. "The TALE Factors and Nuclear Factor Y Cooperate to Drive Transcription at Zygotic Genome Activation." eScholarship@UMMS, 2019. https://escholarship.umassmed.edu/gsbs_diss/1045.

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The TALE factors, comprising the pbx and prep/meis gene families, are transcription factors (TFs) vital to the proper formation of anterior anatomical structures during embryonic development. Although best understood as essential cofactors for tissue-specific TFs such as the hox genes during segmentation, the TALE factors also form complexes with nuclear factor Y (NFY) in the early zygote. In zebrafish, Pbx4, Prep1, and NFY are maternally deposited and can access their DNA binding sites in compact chromatin. Our results suggest that TALE/NFY complexes have a unique role in early embryonic deve
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Anim-Kwapong, Gilbert John. "The potential roles of Albizia zygia in cocoa plantation systems of Ghana." Thesis, Bangor University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239969.

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