Search for dissertations about: "phenotypic differentiation"

Showing result 1 - 5 of 119 swedish dissertations containing the words phenotypic differentiation.

  2. 1. Morphological and Behavioural Differentiation in a Pipefish

    Author : Sarah Robinson-Wolrath; Anders Berglund; Mats Björklund; Felicity Huntingford; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; population differentiation; phenotypic plasticity; mate choice; pipefish; video playback; Biologi; Biology; Biologi;

    Abstract : A central goal of evolutionary biology is to understand the processes responsible for morphological, genetic and behavioural differentiation between sexes and among geographically distinct populations. Perhaps the most significant processes are genetic drift, natural selection, phenotypic plasticity and sexual selection. READ MORE

  4. 2. Hypoxia-induced phenotypic modulation of human neuroblastoma cells

    Author : Linda Holmquist Mengelbier; Institutionen för translationell medicin; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicin människa och djur ; Medicine human and vertebrates ; reoxygenation; HIF-2a; HIF-1a; differentiation; hypoxia; neuroblastoma;

    Abstract : Neuroblastoma is a childhood tumour derived from cells of the sympathetic nervous system, which are arrested at low differentiation stages. Low differentiation stage and high tumour stage correlate to poor outcome. READ MORE

  5. 3. A genomic approach to smooth muscle differentiation and diversity

    Author : Sven Nelander; Göteborgs universitet; []
    Keywords : Keywords: smooth muscle; phenotype; transcriptional regulation; differentiation; transcriptome; microarray; computational prediction; co-expression network; regulatory sequence analysis; gene module; gene battery;

    Abstract : Smooth muscle cells (SMCs) are a broad class of contractile cells that are found in a number of organs systems, including the vasculature, the urogenital system, the bronchi and the gastrointestinal tract. The two main functions exerted by SMCs are to provide contractile force and to synthesize structural components of the extracellular matrix. READ MORE

  6. 4. Phenotypic plasticity and local adaptation in tadpoles

    Author : Björn Lardner; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; salinity tolerance; trade-off; life-history; tail depth; inducible defence; antipredator strategies; tadpoles; anurans; amphibians; Phenotypic plasticity; local adaptation; competitive ability; allozymes.; Animal ecology; Djurekologi;

    Abstract : Amphibian larvae are plastic in many traits. Can plasticity buffer population divergence, so that local adaptation is more common in non-plastic traits? I argue that this may be the case for adaptive plastic responses. READ MORE

  7. 5. Population Differentiation in Solidago virgaurea along Altitudinal Gradients

    Author : Anna Bergsten; Jon Ågren; Staffan Karlsson; Kari Lehtilä; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; population differentiation; altitudinal gradient; plant nutrient status; resorption efficiency; resorption proficiency; flowering phenology; countergradient variation; reproductive effort; flower production; cost of reproduction; Biology; Biologi; Other biology; Övrig biologi; Ecological Botany; Ekologisk botanik;

    Abstract : Altitudinal gradients offer attractive opportunities for studies of population differentiation in response to environmental heterogeneity. In this thesis, I examined population differentiation along altitudinal gradients by combining common-garden experiments with field studies and experiments in alpine, subalpine and boreal populations of the perennial herb Solidago virgaurea. READ MORE