294 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.
This study identifies a rare, recessive deletion of the BZ1 gene as the specific genetic cause of anthocyanin loss in *Ipomoea hederacea*, providing a unique model to isolate and study the fitness effects of anthocyanin biosynthesis without confounding impacts on other flavonoid pathways.
By integrating single-cell expression data with biophysical modeling, this study demonstrates that while gene expression parameters evolve through coordinated evolutionary systems drift to maintain mean levels, transcriptional bursting rates are subject to strong selective constraints likely driven by the need to minimize expression noise.
This study reveals that the endangered Devils Hole pupfish, despite having extremely low genetic diversity and high fixed genetic load from long-term small population size, continues to suffer significant premature embryonic death driven by inbreeding and a specific recessive lethal haplotype containing cardiomyopathy-associated mutations.
This paper introduces a coevolution-aware ancestral sequence reconstruction framework that integrates phylogenetic inference with Direct Coupling Analysis to enforce epistatic constraints, thereby generating more accurate and functionally plausible ancestral protein ensembles that overcome the limitations of traditional independent-site models.
This study demonstrates that environmental gradients across Benin drive distinct, climate-adaptive phenotypic variations in Muscovy ducks, providing empirical evidence to integrate animal genetic resource management into national and regional climate adaptation policies to safeguard food security.
This study presents a high-quality, population-scale pangenome resource of 58 haplotypes from chimpanzees and bonobos that reveals extensive structural variation, highlights parallel adaptations to malaria via glycophorin gene fusions, and underscores the critical role of nonhuman primate pangenomics in understanding human genome evolution and biodiversity.
This study utilizes population genomics to reveal that the vulnerable European plant *Drosera rotundifolia* comprises three distinct genetic lineages shaped by postglacial recolonization, geographic isolation, and climate-driven local adaptation, underscoring the need for conservation strategies that protect this diverse genetic structure.
This study identifies a novel *enolase*-negative subspecies of *Segatella copri* and proposes that its evolution is driven by the conservation of alternative phosphoenolpyruvate synthesis pathways utilizing formate, ferredoxin, and fumarate, which compensate for the absence of enolase and potentially mediate its competitive interactions with *Blautia* species in the human gut.
This study employs an agent-based model of the nematode *Pristionchus pacificus* to demonstrate that the evolutionary success of phenotypic plasticity versus bet-hedging strategies is critically dependent on the intrinsic costs of plasticity, the timescale of environmental fluctuations, and fitness asymmetries between morphs, revealing that small changes in these variables can trigger significant phase transitions in mixed-strategy systems.
This study demonstrates that amino acid auxotrophy in bacteria is primarily driven by phylogenetic history and genome streamlining rather than environmental nutrient availability, challenging the Black Queen Hypothesis by revealing auxotrophy as a conserved, co-occurring genomic lifestyle feature rather than a transient adaptive response.