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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 99 for “"Embryology"”.
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The Embryology of Aedes Vexans (Meigen) (Diptera: Culicidae)
Made available in DSpace on 2014-12-11T18:05:39Z (GMT). No. of bitstreams: 1 7212305.pdf: 5201978 bytes, checksum: 6ee76bdb8c666bd44413a44c8684a7c0 (MD5) Previous issue date: 1971
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Embryology and the evolutionary synthesis: Waddington, development and genetics
The role of embryology, genetics and morphology within mid twentieth century evolution theory, is discussed in the context of the growth to dominance of natural selection as the orthodox mechanism of adaptive evolution. The unification of neo-Mendelian heredity and neo-Darwinian selection theory, …
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Comparative embryology and muscle development of polyclad flatworms (Platyhelminthes: Rhabditophora)
<p>Polyclads belong to the phylum Platyhelminthes, lineage Rhabdotophora, are simple Bilateria, and represent an interesting and useful group for research in developmental biology. Although polyclads, together with catenulids and macrostomids, have been argued to be most closely related to the …
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The embryology, seed coat, and conservation of some Kenyan species of the orchidaceae
Aspects of embryology, seed morphological features and symbiotic seed germination of the Kenyan orchid species of the subfamily Epidendroideae were examined critically in order to elucidate their development and importance in conservation. The embryology of ca. 70 species was studied by …
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The embryology of Prionium serratum (L.f.) Drege ex E.Mey. (Juncaceae:Cyperales) and its implications for the phylogeny of Cyperales
… evolutionary relationships of Cyperales using embryology, morphology and rbcL sequence data. The embryology of Prionium conforms to that found in Juncaceae. The tapetum is glandular-secretory and microsporogenesis is simultaneous. Pollen is united in tetrahedral and cross tetrads and is …
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The Effects of Inanition in the Pregnant Albino Rat, with Special Reference to the Changes in the Relative Weights of the Various Parts, Systems, and Organs of the Offspring
… Minnesota Ph.D. dissertation. June 1919. Major: Embryology. Advisor: 1 computer file (PDF); 46 pages. [91-136]. Published in Contributions to Embryology.
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Possible uses of the developmental embryology of the sea urchin Parechinus angulosus for pollution monitoring in the nearshore marine environment
The possibility of using the embryological life stages of the common sea urchin Parechinus angulosus for pollution bioassay in the nearshore marine environment. was investigated. Discreet stages of development from freshly spawned gametes. through fertilization. pre-hatch development and post-hatch …
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The Role of GDF-3 in Patterning the Early Embryo
<p>The central aim of modern embryology is the resolution of the signaling pathways and transcriptional networks that direct embryonic development. After a century of rich experimental embryology, more recent molecular analyses of embryogenesis have revealed that communication between cells drives …
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Molecular Basis of Vertebrate Embryonic Migration
<p>Embryology aims at understanding how a single fertilized cell develops into a complex multicellular organism. Initially the embryo is no more than a ball of cells where the three primordial layers, the ectoderm, mesoderm and the endoderm are one on top of the other. The three germ layers will go …
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Larval development and life history of Phyllaplysia taylori dall (Opistobranchiata: anaspidea)
… and the ways in which larval characteristics and embryology are correlated with adult biology in marine organisms.</p><p>Aspects of the larval development and adult ecology of Phyllaplysia taylori Dall, are reported in this study.</p>
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Studies on gametogenesis in the Echiuroid worm, Urechis caupo
… (Fisher, 1946).</p><p>Studies on the early embryology of Urechis stimulated the writer to further study of the reproductive cycle. The puzzling descriptions and information pertaining to the immature gametes that are found in the coelomic fluid, coupled with the fact that no permanent gonad …
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Improving the development of bovine in vitro produced embryos cultured individually
Previous research in bovine embryology has found that embryos cultured individually have limited ability to develop compared to their counterparts cultured in a group of other embryos. This investigation aimed to find if any of three different interventions over two experiments would increase …
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The application of numerical methods to the taxonomy of Spermatophyta: with evaluation of the taxonomic implications of the results
… morphology, anatomy, cytology, palynology and embryology, and this is analysed under three different numerical methods (INFO, ASOC and MULASS). A comparison of the results throws light on the high-level taxonomy of Dicotyledons; the currently unfashionable polypetalous/sympetalous dichotomy is …
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Visual literacy in anatomy
… (gross anatomy, histology, neuroanatomy, and embryology) involve significant amounts of visual identification. Understanding the spatial relationship and visual representations of anatomical structures forms the basis for much of anatomy education, particularly in laboratory courses. Students …
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