389 papers
Evolutionary biology explores the dynamic history of life on Earth, tracing how species change, adapt, and diversify over time. This field investigates the mechanisms driving everything from the development of antibiotic resistance in bacteria to the complex social behaviors of primates, revealing the deep connections that bind all living organisms together.
On Gist.Science, we ensure these groundbreaking discoveries remain accessible by processing every new preprint uploaded to bioRxiv in this category. Our team generates both plain-language overviews and detailed technical summaries for each paper, bridging the gap between raw research and public understanding without requiring a specialized background.
Below are the latest studies in evolutionary biology, offering fresh insights into the ongoing story of life.
By analyzing adaptive amino acid changes across 14 species, this study demonstrates that taxon-specific mutational biases strongly shape the patterns of molecular adaptation, with mutation types that arise more frequently contributing disproportionately to adaptive substitutions.
The study introduces Pheno2Seq, a novel method combining fluorescence visualization with single-cell transcriptomics to overcome the lack of morphological markers in microeukaryotes, revealing that the foraminifera *Allogromia laticollaris* relies on a conserved toolkit of chromatin modifiers and DNA repair genes to regulate genome stability during its complex haploid-diploid life cycle transitions.
This study reveals that the dragonfly genus *Aeshna* is a unique hotspot for recurrent X-autosome fusions that have broken 300 million years of karyotypic stasis in Odonata, providing a rare window into the earliest stages of neo-sex chromosome differentiation.
By integrating evolutionary analyses with structural and functional data across four taxa, this study reveals that the meiotic recombination machinery exhibits significant evolutionary plasticity driven by positive selection and relaxed constraints, a finding mechanistically validated through cross-species complementation experiments showing that sequence variation in MSH4 directly modulates recombination proficiency.
This study elucidates the evolutionary history of EZHIP, a PRC2 inhibitor and oncohistone mimic, revealing its X-chromosomal origin, rapid diversification driven by inter-parental conflict in placental mammals, and the conservation of novel functional motifs critical for its role in both reproduction and pediatric brain tumors.
This study reveals that recent horizontal DNA transfer between plants and fungi is rare and strongly asymmetric—predominantly involving fungal-to-plant gene flow and a single plant-to-fungal transposon invasion—yet these acquired sequences subsequently drive significant genome diversification through mechanisms like duplication, loss, and transposon amplification.
This study demonstrates that the choice of structural template in protein stability predictions can artificially generate spurious associations between predicted stability and species longevity in tetrapods, highlighting the need for methodological checks like using outgroup templates to avoid such biases.
By decoupling locomotor behavior in newborn Trinidadian guppies, this study reveals that exploration and activity exhibit contrasting patterns of familial resemblance linked to fathers and mothers respectively, indicating that these traits are evolutionarily modular and can be independently targeted by natural selection to drive personality diversification.
This study demonstrates that while the specialist pine sawfly *Neodiprion lecontei* exhibits variable phenotypic performance on a novel pine host, its transcriptional response is highly predictable, characterized by the targeted upregulation of specific detoxification genes and downregulation of growth pathways, suggesting that specialists rely on narrow, pre-adapted molecular mechanisms rather than broad generalist responses to colonize new hosts.
This study identifies a unique human left ventricular phenotype characterized by an elongated chamber, proportionately greater compact myocardium, and enhanced apical rotation, which distinguishes humans from chimpanzees and rhesus macaques and underlies their exceptionally high stroke volume.