Here, we present a synthetic view on how Kimura's Neutral theory has helped us gaining insight on the different evolutionary forces that shape human evolution. We put this perspective in the frame of recent emerging challenges: the use of whole genome data for reconstructing population histories, natural selection on complex polygenic traits, and integrating cultural processes in human evolution.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1093/molbev/msy067 | DOI Listing |
Nanomaterials (Basel)
January 2025
Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK.
We used density functional theory with a hybrid functional to investigate the structure and properties of [4H] (hydrogarnet) defects in -quartz as well as the reactions of these defects with electron holes and extra hydrogen atoms and ions. The results demonstrate the depassivation mechanisms of hydrogen-passivated silicon vacancies in -quartz, providing a detailed understanding of their stability, electronic properties, and behaviour in different charge states. While fully hydrogen passivated silicon vacancies are electrically inert, the partial removal of hydrogen atoms activates these defects as hole traps, altering the defect states and influencing the electronic properties of the material.
View Article and Find Full Text PDFJ Med Internet Res
January 2025
Institute of Learning Sciences and Technologies, National Tsing Hua University, Hsinchu, Taiwan.
Background: Health misinformation undermines responses to health crises, with social media amplifying the issue. Although organizations work to correct misinformation, challenges persist due to reasons such as the difficulty of effectively sharing corrections and information being overwhelming. At the same time, social media offers valuable interactive data, enabling researchers to analyze user engagement with health misinformation corrections and refine content design strategies.
View Article and Find Full Text PDFChemistry
January 2025
University of Eastern Finland, Department of Chermistry, Yliopistokatu 7, 80100, Joensuu, FINLAND.
The structure and reactivity of small methylaluminoxane (MAO) species (MeAlO)n(Me3Al)m (n = 1-8) have been investigated using DFT (M06-2X), MP2, and CCSD(T) calculations. This hierarchy of methods reveals that DFT artificially stabilizes structures containing 4-coordinate oxygen atoms while higher-level calculations demonstrate a clear preference for structures with 3-coordinate oxygen and 4-coordinate aluminum centers. Analysis of ionization pathways shows these neutral MAO molecules form anions through either methide or Me2Al+ abstraction, with the latter mechanism dominant for sheet structures (n = 5-8).
View Article and Find Full Text PDFNature
January 2025
Southwest Research Institute, San Antonio, TX, USA.
Chorus waves are some of the strongest electromagnetic emissions naturally occurring in space and can cause radiation that is hazardous to humans and satellites. Although chorus waves have attracted extreme interest and been intensively studied for decades, their generation and evolution remain highly debated. Here, in contrast to the conventional expectation that chorus waves are governed by planetary magnetic dipolar fields, we report observations of repetitive, rising-tone chorus waves in the terrestrial neutral sheet, where the effects of the magnetic dipole are absent.
View Article and Find Full Text PDFCognition
January 2025
School of Human Evolution and Social Change, Arizona State University, 900 South Cady Mall, Tempe, AZ 85287, USA; Institute of Human Origins, Arizona State University, 777 E University Drive, Tempe, AZ 85287, USA.
Cultural evolutionary theory has shown that social learning is adaptive across a broad range of conditions. While existing theory can account for why some social information is ignored, humans frequently under-utilise beneficial social information in experimental settings. One account of this is epistemic vigilance, whereby individuals avoid social information that is likely to be untrustworthy, though few experiments have directly tested this.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!