4,364 results found
    1. Evolutionary Biology

    Decoupled maternal and zygotic genetic effects shape the evolution of development

    Christina Zakas et al.
    Early development involves both maternal and zygotic genetic effects. This dual genetic basis shapes the evolution of developmental mode in a marine annelid.
    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

    Developmental evolution of the forebrain in cavefish, from natural variations in neuropeptides to behavior

    Alexandre Alié et al.
    A comparative approach shows that developmental evolution of neuropeptidergic neuronal groups in the hypothalamus of blind cavefish drives adaptive behavioral evolution.
    1. Developmental Biology
    2. Evolutionary Biology

    Evolution of Segmentation: Sox enters the picture

    Felix Kaufholz, Natascha Turetzek
    The discovery of a gene that regulates two segmentation mechanisms in spider embryos is fueling the ongoing debate about the evolution of this crucial developmental process.
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    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

    Evolution of limb development in cephalopod mollusks

    Oscar A Tarazona et al.
    Cuttlefish embryos reveal that cephalopod mollusks evolved specialized arms and tentacles by activating the same genetic circuits that control development of limbs in arthropods and vertebrates.
    1. Developmental Biology
    2. Evolutionary Biology

    A novel enhancer near the Pitx1 gene influences development and evolution of pelvic appendages in vertebrates

    Abbey C Thompson et al.
    Regulatory sequences downstream of a key limb identity gene are required for normal sizes of leg bones, and are changed in wild species with dramatic alterations in pelvic structures.
    1. Developmental Biology
    2. Genetics and Genomics

    A high-resolution mRNA expression time course of embryonic development in zebrafish

    Richard J White et al.
    Global gene expression analysis defines the transcriptional events during the development of zebrafish from fertilised egg to fully formed organism.
    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. Neuroscience

    Anterior CNS expansion driven by brain transcription factors

    Jesús Rodriguez Curt et al.
    The expansion of the anterior Drosophila CNS is driven by increased progenitor generation and prolonged proliferation, mediated by brain-restricted genes and the PRC2.

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