4,654 results found
    1. Evolutionary Biology
    2. Neuroscience

    Quantitative uniqueness of human brain evolution revealed through phylogenetic comparative analysis

    Ian F Miller et al.
    The exceptionally large size of the human brain is the result of accelerating evolution towards larger brains in hominins, but is not the product of neocortical expansion.
    1. Evolutionary Biology

    Rapid evolution of the human mutation spectrum

    Kelley Harris, Jonathan K Pritchard
    Heritable mutations tend to occur within different DNA sequence contexts in different human populations, suggesting that DNA replication and repair often change in efficacy over only a few hundred generations of evolution.
    1. Developmental Biology
    2. Neuroscience

    Evolution and cell-type specificity of human-specific genes preferentially expressed in progenitors of fetal neocortex

    Marta Florio et al.
    Transcriptomic and genomic analysis provides a resource of 50 primate-specific genes preferentially expressed in neural progenitors of fetal human neocortex, 15 of which are specific to humans.
    1. Evolutionary Biology

    Free-living human cells reconfigure their chromosomes in the evolution back to uni-cellularity

    Jin Xu et al.
    Human cell lines regress to become ‘de-sexualized’ by reconfiguring to a 2:3 X/A ratio of high fitness, thus shedding light on the evolution of mammalian sex chromosomes.
    1. Developmental Biology

    Species-specific maturation profiles of human, chimpanzee and bonobo neural cells

    Maria C Marchetto et al.
    Using iPSCs as a model to study neurodevelopmental differences between human and nonhuman primates lays the groundwork for understanding aspects of human brain evolution and neurological disease susceptibility.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Neolithic and medieval virus genomes reveal complex evolution of hepatitis B

    Ben Krause-Kyora et al.
    Ancient hepatitis B virus (HBV) genomes were reconstructed from up to 7000-year-old Stone Age human skeletons, suggesting a long-time complex co-evolution with human populations.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Population genomics reveals the origin and asexual evolution of human infective trypanosomes

    William Weir et al.
    The protozoan parasite Trypanosoma brucei gambiense has undergone recent clonal evolution that reveals the theoretically predicted Meselson effect at a genome-wide level.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    3.3-Å resolution cryo-EM structure of human ribonucleotide reductase with substrate and allosteric regulators bound

    Edward J Brignole et al.
    Cryo-electron microscopy structures of human ribonucleotide reductase reveal molecular details of substrate selection and allosteric inhibition through assembly of its large subunit into a ring that excludes its small subunit.
    1. Epidemiology and Global Health

    The effects of a deleterious mutation load on patterns of influenza A/H3N2's antigenic evolution in humans

    Katia Koelle, David A Rasmussen
    Deleterious mutations slow down flu's antigenic evolution, make it more punctuated in nature, and reduce the virus's genetic diversity.
    1. Cell Biology

    Super-resolution kinetochore tracking reveals the mechanisms of human sister kinetochore directional switching

    Nigel J Burroughs et al.
    Directional switching of sister chromatids during mitosis is regulated by a mechanical clock that is sensitive to the stretch of centromeric chromatin between the chromatids.

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