1,253 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Immune genes are hotspots of shared positive selection across birds and mammals

    Allison J Shultz, Timothy B Sackton
    Pathogens, particularly viruses, target the same genes over deep evolutionary time, resulting in shared signatures of positive selection and transcriptional responses at the same genes.
    1. Neuroscience

    Comparisons between the ON- and OFF-edge motion pathways in the Drosophila brain

    Kazunori Shinomiya et al.
    A complete connectome of the ON and OFF motion pathways of the Drosophila optic lobe is acquired using three-dimensional EM methods, and the similarities and differences of the two pathways are uncovered.
    1. Cell Biology
    2. Computational and Systems Biology

    Chronology of motor-mediated microtubule streaming

    Arvind Ravichandran et al.
    Microtubule streaming driven by molecular motors covers characteristic times that span several orders of magnitude from fast, single-microtubule sliding on molecular scales to slow, collective motion on cellular scales.
    1. Immunology and Inflammation

    HDAC3 restrains CD8-lineage genes to maintain a bi-potential state in CD4+CD8+ thymocytes for CD4-lineage commitment

    Rachael Laura Philips et al.
    CD4 lineage commitment requires HDAC3 to prevent premature upregulation of CD8 lineage genes during T cell development.
    1. Stem Cells and Regenerative Medicine

    Ovaries absent links dLsd1 to HP1a for local H3K4 demethylation required for heterochromatic gene silencing

    Fu Yang et al.
    A Drosophila fertility gene is identified that acts as a linker between HP1a and local H3K4 demethylation during HP1a-mediated gene silencing that is required for ovary development and transposon silencing..
    1. Evolutionary Biology

    Multifactorial processes underlie parallel opsin loss in neotropical bats

    Alexa Sadier et al.
    Parallel losses of short-wave light sensitivity in diverse bats occurred through independent changes at multiple steps in the conversion of genotype into functional phenotype, including pre-, during, and post-transcription.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Meiotic drive of female-inherited supernumerary chromosomes in a pathogenic fungus

    Michael Habig et al.
    Female-inherited supernumerary chromosomes that lack a male-inherited homolog are transmitted to all meiotic products instead of the expected half, which indicates an additional amplification of unpaired chromosomes during meiosis.
    1. Computational and Systems Biology
    2. Developmental Biology

    A re-inducible gap gene cascade patterns the anterior–posterior axis of insects in a threshold-free fashion

    Alena Boos et al.
    The body axis of insects is divided into different fates using a self-regulatory and threshold-free mechanism.
    1. Stem Cells and Regenerative Medicine

    Stem cells repurpose proliferation to contain a breach in their niche barrier

    Kenneth Lay et al.
    Adult stem cells sense nearby tissue damage and recruit immune cells to help them direct efforts towards containing a breach in the epithelial barrier.

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