Search for dissertations about: "Wingless"
Showing result 1 - 5 of 22 swedish dissertations containing the word Wingless.
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1. The role of polysaccharide modifications during Drosophila development
Abstract : Glucosides attached to proteins and lipids have been shown to modulate the activity of signal transduction pathways regulating growth and patterning processes during animal development. In particular, O-linked glycans such as glycosaminoglycans (GAGs) have been implicated in modulation of growth factor signaling pathways. READ MORE
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2. Tumor progression in the ovary and colon. The interaction of Wnt-signaling, transcription and formation of prostaglandins
Abstract : Alterations in cell-cell adhesion, intracellular signaling and transcriptional regulation are common events during transformation of cells to the malignant phenotype. Different cellular defense mechanisms, e.g. inflammatory responses, mediated by prostaglandins, have also been associated with tumor development. READ MORE
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3. Early Rostrocaudal Patterning of the CNS
Abstract : The transformation of an initially uniform population of epiblast cells into an intricately complex central nervous system (CNS) is one of the most fascinating processes during embryonic development. Presumptive neural cells are initially specified as cells of forebrain character. READ MORE
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4. Studies on the role of Dally-like during Drosophila development
Abstract : A cell is constantly subjected to cues from its surroundings in the form of signalling molecules e.g. Wingless (Wg), Insulin-like growth factor (IGF). As a result, important decisions regarding processes like growth, division, differentiation or migration are made. READ MORE
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5. Phylogenetic perspective on host plant use, colonization and speciation in butterflies
Abstract : In this thesis we have studied speciation in three butterfly genera Polygonia (Nymphalidae, Nymphalini), Pararge (Nymphalidae, Satyrinae) and Celastrina (Lycaenidae: Polyommatinae). In the first paper a dated phylogeny, based on molecular data, of Polygonia was constructed. We found strong conflict between the nDNA and mtDNA datasets. READ MORE