Sökning: "NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi"

Visar resultat 1 - 5 av 106 avhandlingar innehållade orden NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi.

  1. 1. A Comparative Study of Head Development in Mexican Axolotl and Australian Lungfish: Cell Migration, Cell Fate and Morphogenesis

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Rolf Ericsson; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Head development; axolotl; lungfish; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; Developmental Biology; miljömedicinsk utvecklingsbiologi;

    Sammanfattning : The development of the vertebrate head is a complex process involving interactions between a multitude of cell types and tissues. This thesis describes the development of the cranial neural crest and of the visceral arch muscles in the head of two species. LÄS MER

  2. 2. Epigenetic Regulation of the H19 Chromatin Insulator in Development and Disease

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Claes Holmgren; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; Developmental Biology; Miljömedicinsk utvecklingsbiologi;

    Sammanfattning : The coordinated regulation of gene expression must be tightly controlled for normal development to occur. In mammals, this issue is further complicated by the requirement of both the maternal and paternal genomes for normal development, reflecting the fact that a subset of genes are monoallelically expressed depending on parental inheritance, a phenomenon known as genomic imprinting. LÄS MER

  3. 3. Epigenetic Control of Mammalian Development : Studies on an imprinting control region

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Liang Liu; Uppsala universitet.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Epigenetic; Genomic imprinting; DNA methylation; Igf2; H19; Insulator; CTCF; Imprinting control region; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; zoologisk utvecklingsbiologi; Animal Development;

    Sammanfattning : A subset of autosomal genes is preferentially or exclusively expressed from one of the parental alleles. This phenomenon, termed genomic imprinting, is highlighted by the neighboring Igf2 and H19 genes, which are monoallelically expressed on opposite parental chromosomes. These features are governed by a 2. LÄS MER

  4. 4. Epigenetic Regulation and Reprogramming of the H19 Imprinting Control Region

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Piero Mariano; Uppsala universitet.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Imprinting; chromatin; H19; Igf2; CTCF; Insulator; methylation; Boris; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi;

    Sammanfattning : The development of a new individual from the fertilized oocyte can ultimately be seen as the consequence of the establishment and maintenance of specific patterns of gene expression. Although regulation of gene activity occurs at different levels, cellular specialization and differentiation are the results of developmental cues that essentially take place at the transcriptional level. LÄS MER

  5. 5. Growth and Behaviour Epigenetic and Genetic Factors Involved in Hybrid Dysgenesis

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Wei Shi; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Interspecies hybridization; hybrid dysgenesis effect; speciation; genomic imprinting; epigenetics; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi;

    Sammanfattning : In mammals, the most frequently observed hybrid dysgenesis effects are growth disturbances and male sterility. Profound defects in placental development have been described and our work on hybrids in genus Mus has demonstrated putative hybrid dysgenesis effects that lead to defects in lipid homeostasis and maternal behavior. LÄS MER