103 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    The genetic factors of bilaterian evolution

    Peter Heger et al.
    Advanced orthology clustering of bilaterian and non-bilaterian sequences identifies 157 bilaterian-specific genes which are linked to key morphological features of this animal group.
    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. Evolutionary Biology
    2. Genetics and Genomics

    Ancient origins of arthropod moulting pathway components

    André Luiz de Oliveira et al.
    Evolutionary reconstruction of the ecdysis pathway shows that its major elements are present in the majority of metazoans, providing evidence that they originated much earlier than currently assumed.
    1. Developmental Biology
    2. Evolutionary Biology

    Molecular insights into the origin of the Hox-TALE patterning system

    Bruno Hudry et al.
    Interactions between Hox and TALE genes, which generate bilaterally symmetrical body plans, originated in early multicellular animals.
    1. Developmental Biology
    2. Evolutionary Biology

    The evolutionary origin of bilaterian smooth and striated myocytes

    Thibaut Brunet et al.
    Molecular profiling of annelid myocytes reveals that the last common protostome-deuterostome ancestor already possessed a dual musculature, with visceral smooth muscles ensuring digestion and somatic striated muscles ensuring locomotion.
    1. Evolutionary Biology

    The last common ancestor of animals lacked the HIF pathway and respired in low-oxygen environments

    Daniel B Mills et al.
    Sponges and ctenophores lack hypoxia-inducible factors, suggesting that the metazoan last common ancestor could have lived aerobically under severe hypoxia and did not need to regulate its transcription in response to oxygen availability.
    1. Genetics and Genomics
    2. Neuroscience

    Co-expression of xenopsin and rhabdomeric opsin in photoreceptors bearing microvilli and cilia

    Oliver Vöcking et al.
    The recently characterized opsin group of xenopsins is likely a major player in animal eye evolution and may have been present in an ancient, highly plastic eye photoreceptor cell type.
    1. Developmental Biology
    2. Evolutionary Biology

    Wnt/β-catenin signaling is an evolutionarily conserved determinant of chordate dorsal organizer

    Iryna Kozmikova, Zbynek Kozmik
    Wnt/beta-catenin signaling is essential for the specification of dorsal cell fate in amphioxus, suggesting a common evolutionary origin for the formation of the dorsal organizer in chordates.
    1. Neuroscience

    Synaptic and peptidergic connectome of a neurosecretory center in the annelid brain

    Elizabeth A Williams et al.
    A combination of electron microscopic reconstruction and the analysis of single cell transcriptome data is used to reconstruct synaptic and peptidergic signaling networks in a neurosecretory centre.
    1. Evolutionary Biology
    2. Neuroscience

    Metazoan evolution of glutamate receptors reveals unreported phylogenetic groups and divergent lineage-specific events

    David Ramos-Vicente et al.
    The animal phylogeny of glutamate receptors indicates that vertebrate types do not account for all receptor classes originated during evolution, neither are they the pinnacle of a linear evolutive process.

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