240 results found
    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary expansion of apical extracellular matrix is required for the elongation of cells in a novel structure

    Sarah Jacquelyn Smith et al.
    A new morphological structure evolved through extreme changes in cell height requires novel connections to an extracellular matrix network, which predates the origin of structure.
    1. Developmental Biology
    2. Evolutionary Biology

    Two consecutive microtubule-based epithelial seaming events mediate dorsal closure in the scuttle fly Megaselia abdita

    Juan Jose Fraire-Zamora et al.
    Evolutionary reduction in tissue number involves the simplification of the seaming process but not signaling during epithelial fusion.
    1. Developmental Biology
    2. Genetics and Genomics

    Speciation and the developmental alarm clock

    Asher D Cutter, Joanna D Bundus
    Integrating speciation genetics with ontogeny can identify predictable rules in the molecular evolution of developmental pathways and in the accumulation of reproductive isolation as genomes diverge.
    1. Developmental Biology

    Geometric models for robust encoding of dynamical information into embryonic patterns

    Laurent Jutras-Dubé et al.
    Propagation, speed and shapes of genetic waves of expression during development can be modeled by a simple interplay between two transcriptional modules (dynamic/static), which explains robustness and precision of patterning.
    1. Genetics and Genomics

    Ancient mechanisms for the evolution of the bicoid homeodomain's function in fly development

    Qinwen Liu et al.
    Transgenic animals carrying reconstructed ancestral alleles reveal how two ancient mutations allowed a regulatory protein to evolve a controlling role in embryonic development in flies.
    1. Developmental Biology
    2. Evolutionary Biology

    Origin of the mechanism of phenotypic plasticity in satyrid butterfly eyespots

    Shivam Bhardwaj et al.
    A gradual, step-wise, physiological/molecular response of eyespot size to temperature is a likely adaptation to seasonal variation experienced in the habitat of Bicyclusanynana butterflies.
    1. Developmental Biology
    2. Evolutionary Biology

    An ancient yet flexible cis-regulatory architecture allows localized Hedgehog tuning by patched/Ptch1

    David S Lorberbaum et al.
    The seemingly simple, constitutive response of the patched/Ptch1 gene to Hedgehog signaling is in fact regulated by large batteries of context-specific Hedgehog-responsive enhancers in both fly and mouse, allowing tissue-specific tuning of the Hedgehog pathway in animal development and evolution.
    1. Developmental Biology
    2. Evolutionary Biology

    Extracellular Matrix: Sculpting new structures

    Jocelyn A McDonald, Yoshinori Tomoyasu
    The origins of the posterior lobe, a recently evolved structure in some species of Drosophila, have become clearer.
    Insight
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    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Research: Evolutionary medicine

    George H Perry
    In recognition that evolutionary theory is critical for understanding modern human health, eLife is publishing a special issue on evolutionary medicine to showcase recent research in this growing and increasingly interdisciplinary field.
    Editorial
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    1. Chromosomes and Gene Expression
    2. Developmental Biology

    ARID1A loss in adult hepatocytes activates β-catenin-mediated erythropoietin transcription

    Rozenn Riou et al.
    A chromatin remodeling factor cooperates with Wnt signaling pathway to transcribe erythropoietin in the adult liver, inducing its secretion and a dramatic erythropoiesis in the spleen.

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