9,667 results found
    1. Evolutionary Biology

    Fine-tuning citrate synthase flux potentiates and refines metabolic innovation in the Lenski evolution experiment

    Erik M Quandt et al.
    A long-term evolution experiment with Escherichia coli shows that the appearance and optimization of a new trait can require both co-opting existing cellular pathways for new roles and reversing a history of previous adaptation.
    1. Evolutionary Biology

    Contingency and chance erase necessity in the experimental evolution of ancestral proteins

    Victoria Cochran Xie et al.
    Replicating experimental evolution from ancestral proteins shows that historical contingency steadily overwhelms chance and necessity as the primary cause of evolutionary variation in molecular sequences on long phylogenetic timescales.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Predicting mutational routes to new adaptive phenotypes

    Peter A Lind et al.
    A combination of genetics, experimental evolution and mathematical modelling defines information necessary to predict the outcome of short-term adaptive evolution.
    1. Evolutionary Biology

    Experimental evolution reveals hidden diversity in evolutionary pathways

    Peter A Lind et al.
    Genetic architecture governs the evolvability of adaptive paths providing a framework for evolutionary forecasting.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Host-selected mutations converging on a global regulator drive an adaptive leap towards symbiosis in bacteria

    M Sabrina Pankey et al.
    Selective forces imposed by the squid animal host drive rapid adaptation of non-native Vibrio fischeri bacteria through convergent mutations of large effect, unmasking preexisting coordinated regulation of symbiosis.
    1. Evolutionary Biology

    Adaptive evolution of nontransitive fitness in yeast

    Sean W Buskirk et al.
    A series of selective events, each improving fitness relative to an immediate predecessor, can result in organisms that are less fit compared to a distant ancestor.
    1. Evolutionary Biology

    Improved use of a public good selects for the evolution of undifferentiated multicellularity

    John H Koschwanez et al.
    The ability to share resources for the benefit of all members of a group may have driven ancient organisms to evolve from a unicellular to a multicellular state.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Environment determines evolutionary trajectory in a constrained phenotypic space

    David T Fraebel et al.
    Experimental evolution shows that when selection acts on two traits constrained by a trade-off, the direction of phenotypic evolution depends on the environment.
    1. Computational and Systems Biology

    Calibration and analysis of genome-based models for microbial ecology

    Stilianos Louca, Michael Doebeli
    A novel computation tool for microbial community modeling predicts the evolution and diversification of E. coli in laboratory evolution experiments and gives insight into the underlying metabolic processes.
    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.

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