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    1. Chromosomes and Gene Expression

    Identification of Pol IV and RDR2-dependent precursors of 24 nt siRNAs guiding de novo DNA methylation in Arabidopsis

    Todd Blevins et al.
    The 24-nucleotide long siRNAs that guide cytosine methylation in Arabidopsis are made by dicing short double-stranded RNAs that are only around 30 nucleotides long.
    1. Developmental Biology
    2. Evolutionary Biology

    Quantitative system drift compensates for altered maternal inputs to the gap gene network of the scuttle fly Megaselia abdita

    Karl R Wotton et al.
    Quantitative system-level analysis of a pattern-forming gene regulatory network in a non-model organism shows that dynamic changes in gene expression evolve through quantitative system drift.
    1. Cell Biology
    2. Developmental Biology

    Philosophy of Biology: The analysis of living systems can generate both knowledge and illusions

    Antony M Jose
    By thinking about experimental techniques in terms of six broad approaches – perturbation, visualization, substitution, characterization, reconstitution, and simulation – researchers may be able to generate more reliable inferences.
    1. Developmental Biology
    2. Evolutionary Biology

    Extracellular Matrix: Sculpting new structures

    Jocelyn A McDonald, Yoshinori Tomoyasu
    The origins of the posterior lobe, a recently evolved structure in some species of Drosophila, have become clearer.
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    1. Microbiology and Infectious Disease

    Tropical Diseases: Can CRISPR help in the fight against parasitic worms?

    Paul McVeigh, Aaron G Maule
    The first reports of CRISPR/Cas9 genome editing in flatworms could usher in a new era of research on these dangerous human parasites.
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  1. Research: Publication bias and the canonization of false facts

    Silas Boye Nissen et al.
    Publication bias, in which positive results are preferentially reported by authors and published by journals, can restrict the visibility of evidence against false claims and allow such claims to be canonized inappropriately as facts.
    1. Stem Cells and Regenerative Medicine

    Regeneration: Learning about loss

    Alejandro Sánchez Alvarado
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    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Systematic perturbation of retroviral LTRs reveals widespread long-range effects on human gene regulation

    Daniel R Fuentes et al.
    A new approach combines guide RNA multiplexing with CRISPR activation and interference to facilitate functional studies of transposable elements present in hundreds of copies throughout the human genome.
    1. Neuroscience

    Memory Formation: Let’s replay

    Björn Rasch
    Reactivating brain activity patterns during sleep enhances memory performance the next day.
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