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    1. Developmental Biology
    2. Evolutionary Biology

    Evolutionary expansion of apical extracellular matrix is required for the elongation of cells in a novel structure

    Sarah Jacquelyn Smith et al.
    A new morphological structure evolved through extreme changes in cell height requires novel connections to an extracellular matrix network, which predates the origin of structure.
    1. Genetics and Genomics
    2. Neuroscience

    Sex-determining genes distinctly regulate courtship capability and target preference via sexually dimorphic neurons

    Kenichi Ishii et al.
    Sex-specific characteristics of the fruit fly courtship behavior are not specified by a single binary switch, but as a combination of traits that are modularly specified by separable genetic switches.
    1. Developmental Biology

    A mammalian Wnt5a–Ror2–Vangl2 axis controls the cytoskeleton and confers cellular properties required for alveologenesis

    Kuan Zhang et al.
    Regulation of cellular properties such as ligand secretion and migratory ability through changes in the cytoskeleton mediated by a Wnt5a–Ror2–Vangl2 axis is a major determinant of alveolar formation.
    1. Neuroscience

    A big-data approach to understanding metabolic rate and response to obesity in laboratory mice

    June K Corrigan et al.
    The metabolic rate of mice is disproportionately affected by the site of experimentation, affecting the phenotypic interpretation of genetically modified strains.
    1. Genetics and Genomics
    2. Neuroscience

    Layered roles of fruitless isoforms in specification and function of male aggression-promoting neurons in Drosophila

    Margot Wohl et al.
    Male-type aggressive and courtship behaviors of the fruit flies are differentially specified by two sex-determining genes, providing a substrate for the evolution to sculpt these two behaviors independently.
    1. Neuroscience

    Evolution of neuronal anatomy and circuitry in two highly divergent nematode species

    Ray L Hong et al.
    The substrate for evolutionary divergence does not lie in changes in neuronal cell number or targeting, but rather in sensory perception and synaptic partner choice within invariant, prepatterned neuronal processes.
    1. Developmental Biology
    2. Genetics and Genomics

    Thyroid hormone regulates distinct paths to maturation in pigment cell lineages

    Lauren M Saunders et al.
    Single-cell transcriptomics combined with genetic analyses identify post-embryonic neural crest subpopulations and thyroid hormone dependencies in zebrafish adult pigment pattern development.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Self-sperm induce resistance to the detrimental effects of sexual encounters with males in hermaphroditic nematodes

    Lauren N Booth et al.
    Nematode hermaphroditism has co-evolved with a self-sperm sensing mechanism that protects hermaphrodites from the detrimental effects of mating with males.
    1. Microbiology and Infectious Disease

    Differential requirements for cyclase-associated protein (CAP) in actin-dependent processes of Toxoplasma gondii

    Alex Hunt et al.
    Partially overlapping functions of a limited subset of actin binding proteins allow the parasite Toxoplasma gondii to achieve actin regulation required for complex cellular processes.
    1. Genetics and Genomics
    2. Immunology and Inflammation

    SCGN deficiency results in colitis susceptibility

    Luis F Sifuentes-Dominguez et al.
    A novel mutation in SCGN is associated with risk for inflammatory bowel disease and implicates the intestinal neuroendocrine compartment in the pathogenesis of this disorder.