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.
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.
This study reveals that warning colour variation in the wood tiger moth is governed by independent major-effect loci across sexes and life stages with limited trait associations, suggesting that variable selection rather than genetic correlations maintains the species' colour polymorphisms.
This study reveals that the recovery of the critically endangered Seychelles warbler following a severe population bottleneck was enabled by the selective purging of severe genetic load, which allowed the species to survive despite experiencing significant inbreeding depression driven by a remaining polygenic load of mildly deleterious alleles.
Through adaptive laboratory evolution, the minimal bacterium JCVI-syn3B successfully acquired a genetically encoded ability to grow at low temperatures via mechanisms involving mRNA turnover, DNA stabilization, lipid synthesis, and division protein upregulation, demonstrating that even genomically minimal cells retain substantial evolvability.
This study demonstrates that chronic inflammation (inflammaging) mediates age-related testosterone declines in men as an energy-conserving response to cellular damage, while paradoxically revealing that maintaining high testosterone levels despite such inflammation increases mortality risk.
This study analyzes *Helicobacter pylori* in the admixed Cabo Verdean population to reveal that while bacterial strains reflect historical trans-Atlantic migrations and show signs of host adaptation, their ancestry is uncoupled from host ancestry, offering a unique model for investigating host-pathogen interactions independent of parallel evolutionary history.