Global ETD Search
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 208 for “"pigmentation"”.
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Tyrosinase and Melanin Pigmentation in Azotobacter Chroococcum
Made available in DSpace on 2014-12-05T21:45:30Z (GMT). No. of bitstreams: 1 5900534.pdf: 2458013 bytes, checksum: 3302b07bb626ef937514100c5a772253 (MD5) Previous issue date: 1958
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The role of pigmentation in face perception
Faces each have distinct pigmentation as well as shape, which suggests that both cues may play a role in the perception of faces. However, there is a common implicit assumption that pigmentation cues are relatively unimportant, and so the role pigmentation plays in face perception has gone largely …
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Ultraviolet Radiation and Carotenoid Pigmentation in Symbiotic Anthozoans
… to investigate 1) the origin of carotenoid pigmentation and the role of carotenoids as ultraviolet radiation (UVR) photoprotectants and 2) the repopulation and photoadaptive response of symbiotic algae (i.e., zooxanthellae) after bleaching. An experiment was conducted to partition the …
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Alain Mabanckou et la pigmentation de l'edition francaise
In 2006 for the first time in the history of French literature, five out of the seven most prestigious French literary prizes were attributed to foreign writers. To the signatories of a manifesto published a few months later, this meant that francophone writers no longer belonged to the margins of …
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The effect of cutaneous vasculature on skin pigmentation
… analysis 7 K. Ex vivo skin organ culture and pigmentation assay of cultured skin 7 L. Statistical analysis 8 III. RESULTS 9 A. Preliminary study 9 1. Effect of HUVECs on the proliferation of fibroblasts 9 B. The presence of endothelial cells has a negative effect on pigmentation 10 1. The …
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Evolutionary genetics of CYP2J19 in red carotenoid pigmentation
… genetic mechanisms underlying carotenoid based pigmentation. Recently, the gene CYP2J19 was strongly implicated in red ketocarotenoid pigmentation for coloration and colour vision within two lineages of song birds (the zebra finch and the red factor canary). Here, I extend the investigation of …
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Evolutionary and Developmental Survey of Genes Involved in Chordate Pigmentation
The pigmentation represents one of the most interesting topics in animal life because it is a decisive factor for the evolutionary success and the conquest of new ecological niches. Through the combination of developmental biology and comparative genomics, some aspects of pigmentary dynamics have …
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MOLECULAR ANALYSIS OF FLORAL PIGMENTATION IN THE ORCHID, BROMHEADIA FINLAYSONIANA
This project involved the isolation and characterisation of cDNAs in the flavonoid biosynthetic pathway of a local species of orchid, Bromheadia finlaysoniana (Lindl.) Rchb. F. A cDNA library was constructed from the fully-opened flowers of Bromheadia finlaysoniana. cDNA clones encoding …
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The molecular basis of seed coat pigmentation in Glycine max
… gives rise to variation in soybean seed coat pigmentation.
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Evolution and Development of Pigmentation Patterns in East African Cichlid fishes
Understanding the origin of novel phenotypic diversity remains a fundamental question in evolutionary genetics. This thesis aims to address the origin and diversification of novel traits by integrating population genomics and developmental genetics techniques. Using East African cichlid fishes as a …
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Role of subfunctionalized MYB paralogs in the evolution of pigmentation patterning in Clarkia
… study of the intricate spatial patterning of pigmentation, for example zebra stripes, butterfly wings, and flower spots. The study of plant pigmentation patterning is still in its infancy, but one surprising preliminary result is that patterning, specifically with anthocyanin pigments, always …
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The Effects of Soil Calcium, Potassium, and Phosphorus on Pigmentation Inbetter Times Roses
Made available in DSpace on 2014-12-04T19:49:25Z (GMT). No. of bitstreams: 1 6000134.pdf: 5544767 bytes, checksum: 9d5e6d1987e731a05db7be43ec6b7095 (MD5) Previous issue date: 1959
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Understanding the development, evolution, and function of bullseye pigmentation patterns in Hibiscus trionum
… patterns are created by spatial differences in pigmentation, cell shape and texture of the adaxial petal epidermis. The mechanisms controlling formation and evolution of these patterns, and their exact role in plant-animal communication are not well understood. My PhD adds to current …
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Population structure and the molecular genetics of petal spot pigmentation in Gorteria diffusa
… to characterise the genes regulating anthocyanin pigmentation within petal spots. For the latter, two additional morphotypes were studied to improve the robustness of conclusions based on comparisons between spotted and plain petal tissues. The anthocyanin cyanidin 3-glucoside was found to pigment …
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Colouration evo-devo: the developmental basis of intra-specific variation in cichlid pigmentation
Understanding why and how organisms diversify is a major goal of evolutionary biology. The fields of evolutionary developmental biology, evolutionary ecology, and population genetics have taken complementary approaches to this task, yet a lack of integration between these fields limits our …
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Induction of growth and pigmentation changes by hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) in angiosperms
… family, was the only plant that produced red pigmentation at leaf margins and interveinal chlorosis in greenhouse studies. A threshold level of 160 mg per L of RDX in soil solution was necessary for the red color change to be visible. This coloration occurred only at the normal time of …
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