Articles tagged with Evolutionary Methods
Researchers created a map of the influenza A (H3N2) virus's antigenic and genetic evolution from 1968 to 2003, revealing 11 closely related virus clusters. The approach will aid in monitoring antigenic differences among vaccine strains and predicting infection success of emerging viruses.
Research reveals Borneo's elephants are genetically distinct from other Asian elephants, suggesting they may have parted ways 300,000 years ago. This classification changes the focus of their conservation, as their habitats are increasingly disrupted by human expansion.
Researchers used molecular methods to identify genetically unique areas on Sulawesi, prioritizing conservation efforts for species with distinct evolutionary lineages. The study highlights the need for targeted resource allocation to maximize biodiversity conservation.
Researchers from Uppsala University developed new computer-based methods for Bayesian inference in evolutionary biology, enabling analysis of complex problems on ordinary desktop computers. The new methods can be applied to various fields, including species relationship reconstruction and molecular evolution studies.
A geologist proposes that traditional Chinese landscape paintings, emphasizing harmony with nature, may have contributed to China's lack of early adoption of geological principles. This perspective is rooted in the Western European emphasis on geometric perspective as a tool for understanding spatial relationships.
Autonomous agents improved performance by communicating via message board, outperforming previous studies and human-programmed strategies
Researchers analyzed Precambrian sedimentary rocks to track the evolution of oxygen and ozone in the early atmosphere. The study found a 'profound change' in chemical reactions involving sulfur, indicating limited free oxygen and a global signature.
Scholz et al. study reveals significant genomic differences between Neandertal and human fossils, suggesting separate evolutionary histories. The researchers used a novel method to assess cross-hybridization of fossil DNA, allowing them to distinguish two well-defined Neandertal fossils from modern humans.
A new method suggests that trees and large plants led to an increase in atmospheric oxygen over 300 million years ago. This period saw higher concentrations of oxygen lasting for 100 million years, significantly higher than current levels of 21 percent.
Professor Brian Alters' three-year project will partner with six nearby school boards and develop hands-on science activities for elementary and secondary teachers. The goal is to improve K-12 teaching and excite students about learning science, benefiting over 80,000 students.
Researchers have discovered a prehistoric virus in Arctic ice that could potentially re-emerge as the climate warms. The ancient tomato mosaic tobamovirus was found in ice cores dating back 500 to 140,000 years, raising concerns about the possibility of new epidemics.
Genetics professor John Avise's book, The Genetic Gods, examines how genetic discoveries are shaping our understanding of human life, including spirituality. The book argues that genes have a significant influence on human affairs, challenging traditional views of the supernatural.
Researchers have developed a fast new way to compute three-dimensional models of internal organs and anatomical features from noisy medical images. The method, based on partial-differential equations, allows doctors to build accurate models with just a single click inside the region of interest.
Numerical simulations by U of T physicists suggest sea-level changes exceeding 100 meters can occur, contradicting previous assumptions linking them to ocean floor elevation changes. The 'wobbling' of the Earth's rotation axis produces regional sea-level variations, requiring a reevaluation of long-term climate studies.
Researchers have found evidence of a 'missing' form of ordinary matter, known as baryonic matter, that was thought to be needed to form the cosmos billions of years ago. The findings suggest that this matter was spread throughout intergalactic space in a diffuse gas of hydrogen and helium atoms.
Astronomers at Johns Hopkins University have developed a new method called photometric-redshift astronomy, which allows for rapid distance measurements to distant galaxies. This technique resolves a long-standing dilemma in cosmology research by enabling the study of galaxy evolution and dark matter.
Scientists successfully modeled the evolution of a massive X-ray galaxy cluster using CTC's SP, achieving unprecedented complexity and resolution. The simulation explores the collapse of high-density regions in a cube of 256 million light years on a side, incorporating gravity and hydrodynamics.
Geochronologist Richard Ku's analysis of Peking Man fossils reveals they date back to at least 400,000 years ago, significantly older than previous estimates. This finding sheds new light on human evolution and challenges current understanding of the species' origins.