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    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Microtubules soften due to cross-sectional flattening

    Edvin Memet et al.
    A combination of experiments, theory, and simulations shows that the elastic softening of microtubules when they are bent arises due to the flattening of their tubular cross-section.
    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.