6,696 results found
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Punctuated evolution and transitional hybrid network in an ancestral cell cycle of fungi

    Edgar M Medina et al.
    Cell cycle network evolution in a fungal ancestor was punctuated by the arrival of a viral DNA-binding protein that was permanently incorporated into the regulatory network controlling cell cycle entry.
    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. Computational and Systems Biology
    2. Evolutionary Biology

    Deep evolutionary analysis reveals the design principles of fold A glycosyltransferases

    Rahil Taujale et al.
    Deep mining of GT-A fold sequences provides an evolutionary framework for investigating complex relationships connecting GT-A fold sequence, structure, function and regulation.
    1. Evolutionary Biology

    Support for a clade of Placozoa and Cnidaria in genes with minimal compositional bias

    Christopher E Laumer et al.
    Protein coding genes strongly support a sister group relationship between Placozoa and Cnidaria to the exclusion of Bilateria, contradicting previous phylogenies, which have likely been misled by pervasive compositional heterogeneity.
    1. Developmental Biology

    Folded gastrulation and T48 drive the evolution of coordinated mesoderm internalization in flies

    Silvia Urbansky et al.
    Functional recapitulation of a likely evolutionary gain in gene expression shows that two genes are sufficient to switch mesoderm cell internalization from stochastic cell ingression to coordinated epithelial invagination.
    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

    Dynamic BMP signaling polarized by Toll patterns the dorsoventral axis in a hemimetabolous insect

    Lena Sachs et al.
    During the evolution of insect lineages, a signaling pathway dedicated to pathogen defense was co-opted for a new role in embryonic patterning.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Dynamics of genomic innovation in the unicellular ancestry of animals

    Xavier Grau-Bové et al.
    The foundations of genomic complexity in multicellular animals have deep roots in their unicellular prehistory, both in terms of innovations in gene content, as well as the evolutionary dynamics of genome architecture.
    1. Evolutionary Biology

    Gene family innovation, conservation and loss on the animal stem lineage

    Daniel J Richter et al.
    The genomes of animal progenitors evolved as mosaics of old, new, rearranged, and repurposed protein domains, genes and pathways and paved the way for the origin and evolution of animals.
    1. Ecology

    Inversion of pheromone preference optimizes foraging in C. elegans

    Martina Dal Bello et al.
    Worms' attraction to pheromones turns into repulsion when a food patch is depleted, helping them avoid already exploited territories and search for new food sources.

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