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Estimating effective population size trajectories from time-series identity-by-descent segments.
Genetics
January 2025
Department of Archaeogenetics, Max Planck Institute for Evolutionary Anthropology, Leipzig 04317, Germany.
Long, identical haplotypes shared between pairs of individuals, known as identity-by-descent (IBD) segments, result from recently shared co-ancestry. Various methods have been developed to utilize IBD sharing for demographic inference in contemporary DNA data. Recent methodological advances have extended the screening for IBD segments to ancient DNA (aDNA) data, making demographic inference based on IBD also possible for aDNA.
View Article and Find Full Text PDFAntiviral Mx proteins have an ancient origin and widespread distribution among eukaryotes.
Proc Natl Acad Sci U S A
January 2025
Division of Basic Science, Fred Hutchinson Cancer Center, Seattle, WA 98109.
Mx proteins, first identified in mammals, encode potent antiviral activity against a wide range of viruses. Mx proteins arose within the Dynamin superfamily of proteins (DSP), which mediate critical cellular processes, such as endocytosis and mitochondrial, plastid, and peroxisomal dynamics. Despite their crucial role, the evolutionary origins of Mx proteins are poorly understood.
View Article and Find Full Text PDFPost-Glacial Vegetation Trajectories on the Eastern Tibetan Plateau Reflect Millennial-Scale Migration Lags in Complex Mountain Terrain Based on Sedimentary Ancient DNA and Dynamic Dispersal Modeling.
Ecol Evol
January 2025
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Polar Terrestrial Environmental Systems Potsdam Germany.
Mountains with complex terrain and steep environmental gradients are biodiversity hotspots such as the eastern Tibetan Plateau (TP). However, it is generally assumed that mountain terrain plays a secondary role in plant species assembly on a millennial time-scale compared to climate change. Here, we investigate plant richness and community changes during the last 18,000 years at two sites: Lake Naleng and Lake Ximen on the eastern TP with similar elevation and climatic conditions but contrasting terrain.
View Article and Find Full Text PDFMetagenomic profiling of plaque microbiota in Indian subjects: identified hidden ecological tapestry.
Curr Genet
January 2025
Department of Prosthodontics, King George's Medical University, Lucknow, 226003, India.
Dental plaque biofilms are the primary etiologic factor for various chronic oral infectious diseases. In recent years, dental plaque shows enormous potential to know about an individual microbiota. Various microbiome studies of oral cavity from different geographical locations reveals abundance of microbial species.
View Article and Find Full Text PDFImmersive Videography of Ancient DNA Extraction for Community Engagement and Educational Initiatives by the Anson Street African Burial Ground Project.
Am J Biol Anthropol
January 2025
The Anson Street African Burial Ground Project, Mount Pleasant, South Carolina, USA.
Objective: Community engagement is an increasingly important component of ancient DNA (aDNA) research, especially when it involves archeological individuals connected to contemporary descendants or other invested communities. However, effectively explaining methods to non-specialist audiences can be challenging due to the intricacies of aDNA laboratory work. To overcome this challenge, the Anson Street African Burial Ground (ASABG) Project employed a GoPro camera to visually document the process of aDNA extraction for use in community engagement and education events.
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