Researchers from Universitat Autònoma de Barcelona found that compound genomes lose essential properties for evolution when complex. The study challenges the 'metabolism first' theory and supports the idea that genetic information stored in nucleotide polymers, like RNA and DNA, is crucial for life to emerge.
Researchers identified associations between genetic variations and brain surface area, suggesting a key role for microcephaly genes in human brain evolution. The study found significant links with regulatory regions of the CDK5RAP2 gene, indicating a need to focus on these processes for future research.
The American Journal of Botany presents two papers exploring botanical history before Darwin, his research on plant movements and orchids. Research reveals that Darwin's ideas on plant movements contributed to the discovery of auxin, a hormone essential in plant growth processes.
The January-February 2010 GSA Bulletin features studies on the kinematic evolution of curved mountain belts, including a paleomagnetic study of the Sevier thrust belt. The issue also covers the Sudbury impact crater in Michigan, USA, and GIS assessments of post-fire debris-flow hazards in central Idaho.
Bestselling journalist Robert Wright will present his new book "The Evolution of God," a provocative interpretation of the evolution of religion and our concepts of God. This event marks one of several 'Darwin Day' events at Stevens to honor the 150th anniversary of Charles Darwin's publication.
Professor Leonard C. Yannielli receives 2009 Evolution Education Award for his work promoting accurate understanding of biological evolution in the classroom and community. He has developed innovative instructional materials and organized discussions on evolution, working to educate colleagues across academic disciplines.
Researchers at Penn University developed a new theory that explains the pace of evolution and determines the speed at which an organism adapts. The study predicts that some organisms, including humans, may not evolve indefinitely and that populations can accrue mutations at a constant rate even under Darwinian selection.
The U.S. Department of Education has awarded Kansas State University a $783,000 grant to support a new graduate fellowship training program in ecology, evolution, and genomics. The program aims to train seven graduate fellows in integrative learning and training across the disciplines of ecology, evolution, and genomics.
The Geological Society of America has awarded Judge John E. Jones III the prestigious President's Medal for his role in defending the teaching of evolution in schools. As part of a 5-member panel discussion on Darwin Day, he will explore issues related to presenting scientific knowledge and accommodating challenging concepts.
Researchers at the University of Oregon have found that evolution can only go forward, as genetic mutations block paths to ancestral genes. The team resurrected ancient proteins and manipulated them to study reverse evolution, discovering that restrictive mutations act like an evolutionary ratchet, preventing reversal.
Researchers discovered molecular evidence supporting Darwin's theory of evolution, finding that complex machines evolved through a process of combination and modification of existing proteins. The study provides a blueprint for understanding the evolution of cellular machinery, contradicting Intelligent Design explanations.
Gladstone scientists have found the first genetic link between reptile and human heart evolution, linking protein Tbx5 to the development of four-chambered hearts in turtles and humans. The study sheds light on the evolution of warm-bloodedness and provides insights into congenital heart disease.
A study found that human populations began to expand in size in Africa around 40,000 years ago, supporting the hypothesis that population growth played a significant role in the evolution of human cultures. The research used genetic evidence and computational approaches to simulate the evolution of genetic lineages over time.
Researchers at UC Santa Barbara have identified genes that regulate flower color change, revealing a predictable pattern of evolution. The study found that hawkmoths prefer white or yellow flowers over red ones, driving natural selection to shift flower colors.
A study on stickleback fish found that two related species evolved to lose their pelvises using different genes, contradicting earlier research. This discovery sheds new light on the mechanisms of evolutionary diversity and limb loss in nature.
Scientists have identified distinct genes responsible for the evolution of pelvis and body armor loss in two species of stickleback fish. The study, published in Current Biology, shows that different genes can have similar effects on evolutionary change, contradicting earlier research.
A University of Minnesota study found that high school biology teachers significantly impact college students' acceptance of evolution and questioning of creationism. About two-thirds of students reported their high school classes included evolution, while one-third did not cover either evolution or creationism.
The special issue of Genome Research celebrates Charles Darwin's birthday and the publication of On the Origin of Species. Researchers investigate human adaptation and evolution on a genome-wide scale, describing novel fine-scale genetic structure within and between populations worldwide.
A team of astronomers has found a sample of massive galaxies with properties suggesting they may have formed recently, running counter to widely-held beliefs. The discovery challenges our understanding of galaxy formation and evolution, offering new opportunities for research into the origin and early history of galaxies.
A study in Evolution Canyon, Israel, shows that scorpion species exhibit different distributions on the south-facing and north-facing slopes, despite identical regional geology. The results suggest that environmental pressures, such as sunlight and drought, can lead to local changes in biodiversity.
A recent study by Penn State researchers suggests that several statistical methods used to detect natural selection at the molecular level are faulty. This has implications for the interpretation of hundreds of published studies on human evolution and the role of natural selection in shaping human traits.
Researchers demonstrate that fish can return to normal size after size-selective fishing is eased, reversing detrimental evolution. The study suggests a slow recovery process, with full recovery estimated to take many decades for commercially harvested species.
African populations are still evolving due to natural selection, with lactose tolerance and genetic variation influenced by diseases like malaria. Penn genetics researcher Sarah Tishkoff presents her findings on human evolutionary history in Africa.
According to UCLA behavioral ecologist Daniel T. Blumstein, biology and evolution offer valuable lessons on managing security threats. By studying species' risk management strategies, we can learn how to allocate energy to defense versus other things, and how not to overreact.
A recent study by researchers at the University of Bath and London's Natural History Museum found that dinosaur fossils match their evolutionary trees remarkably well. The study used statistical data from fossils of four major dinosaur groups to confirm the accuracy of current views on their evolution.
Researchers at Uppsala University identified fast-evolving human genes with patterns of molecular evolution not driven by natural selection. Instead, biased gene conversion (BGC) speeds up the rate of evolution in certain genes, fixing harmful mutations.
A team led by Southwest Research Institute (SwRI) has been selected by NASA to focus on expanding knowledge of the Moon's formation and bombardment history. The four-year project will unravel the origin of the Earth-Moon system and the early evolution of the solar system through a multidisciplinary approach.
Researchers recreated natural selection in real-time, demonstrating the first quantitative evidence for natural selection on standing genetic variation. The study found that only half of gene frequencies reverted to ancestral levels, highlighting the contingent nature of evolution.
Researchers document increasing resistance to adamantane-based antiviral drugs in over 30% of H5N1 samples. The study provides a framework for monitoring global evolution of drug resistance using molecular evolution tests and geographic visualization techniques.
A new study found that HIV's rate of evolution slows significantly when a patient's CD4+ T-cell count drops, which can happen long before symptoms of AIDS appear. This change allows the immune system to keep up with the virus, potentially making it harder for it to develop resistance to treatment.
Researchers have documented a primate mimicking a sound from another species without specific training, shedding light on the evolution of speech and learning in orangutans. The study's findings suggest that orangutans can learn new sounds and use them voluntarily, opening up new avenues for studying human speech evolution.
Researchers from the University of Pittsburgh have documented early separate-sex evolution in a wild strawberry species still transitioning from hermaphroditism. This finding provides evidence for the theory that males and females developed from hermaphroditic ancestors, with plants serving as models for understanding early evolution.
Researchers identify key gene transferred from Sicilian plant to British Groundsel weed, allowing for natural genetic exchanges and evolution. This discovery challenges traditional views of evolution as a one-way process.
Researchers at Princeton University have discovered that protein chains act as adaptive machines, controlling their own evolution in response to natural selection. This finding extends Darwin's model and suggests that organisms can subtly direct aspects of their evolution to create order out of randomness.
A new study by Rice University bioengineers provides a comprehensive mathematical analysis of virus evolution, incorporating gene swaps and recombination. The results suggest that designing drugs that force viruses to mutate themselves out of existence may be possible, potentially eradicating disease.
Researchers propose that organisms can learn environment rules and develop modular designs storing history information in their genome, generating useful novelties for new environments.
Dr. Randy Moore, a professor at the University of Minnesota, is receiving the 2008 Evolution Education Award for his innovative classroom teaching and community education efforts to promote evolutionary biology. His approach incorporates evolution as a unifying element of modern biology, helping students understand and appreciate nature.
Yale researchers have confirmed that plants with fast reproductive cycles exhibit more rapid rates of molecular evolution. Their study analyzed DNA sequence data for five major evolutionary lineages within flowering plants, revealing a clear pattern where shorter-lived species show greater variability in their rates of evolution.
Researchers at Stanford University School of Medicine discovered ultraconserved DNA regions that have been highly conserved throughout evolution. Despite being deleted in laboratory animals, these regions are less likely to be lost in primates and rodents, suggesting a possible role in fundamental biological processes.
Researchers at Yale University identified a key regulatory link in the evolution of pregnancy involving the altered function of HoxA-11 protein. This finding revolutionizes our understanding of how pregnancy evolved in mammals, highlighting a crucial genetic switch that tempered the immune system and allowed for internal development.
The Trichoplax genome sequence provides a 'Rosetta Stone' for understanding the origins of animal-specific pathways. It shares over 80% of its genes with humans and defines Trichoplax as a branching point of animal evolution.
A new ribosome study sheds light on the oldest branches of evolutionary life, suggesting that differences in ribosomal structure between bacteria and archaea are molecular fossils of early evolution. The research confirms and extends Carl Woese's early work on finding signs of evolution in the ribosome.
Research suggests that schizophrenia may be a by-product of human brain evolution, driven by increased metabolic demands. The study found molecular mechanisms involved in the evolution of human cognitive abilities and identified changes in gene expression and metabolite concentrations in both healthy humans and individuals with schizop...
Researchers found that each type of cancer has distinct gene mutations that provide a 'selective advantage', driving tumor formation through evolution. This discovery improves our understanding of how evolution shapes life and lays the groundwork for new cancer treatments.
A team of Caltech astronomers reveals that spiral galaxies have more bars than previously thought, with most forming in smaller, low-mass galaxies. The study suggests that bars play a crucial role in galaxy evolution, fueling new star formation and feeding massive black holes.
A new study by Claus Wilke and D. Allan Drummond found that genetic evolution prioritizes minimizing errors in protein production to prevent misfolded proteins, which can cause neurodegenerative diseases. The research may lead to better detection of genes with mutations leading to toxic proteins.
Scientists have found a missing link in the evolution of flatfishes, explaining how they developed their unique asymmetrical body plan. The study, published in Nature, reveals that early flatfishes had intermediate characteristics, rejecting the theory that they evolved suddenly as 'hopeful monsters'.
A new computational tool provides accurate insights into DNA and protein sequence evolution by avoiding systematic errors. The results suggest that sequence turnover is much more common than assumed, with a higher frequency of insertions and lower frequency of deletions.
A new study investigates the evolution of genomic imprinting in mammals, finding that different regions became imprinted at different times during mammalian evolution. This suggests that changes were in response to selection pressures and are adaptive.
A national survey of teachers found that one in eight high school biology teachers present creationism as a scientifically valid alternative to Darwinian evolution. The majority of teachers spend less than five hours on human evolution, suggesting pressure from the community may influence teaching practices. Raising certification stand...
Researchers discovered that Lake Washington sticklebacks adapted to increased trout predation after water transparency improved, leading to rapid evolution of bony armor. The study found that genetic variation and the Eda gene played key roles in this process.
Researchers have discovered a critical flaw in the standard method for analyzing gene evolution, particularly for genes encoding multi-domain proteins. A new tool called Neighborhood Correlation has been developed to correctly identify gene ancestry, which is essential for understanding gene function and regulatory circuitry. The tool ...
A new analysis of the genome of St Louis encephalitis has shed light on its evolution, tracing the virus back to South America and identifying a single mutation that made it pathogenic to humans. The research suggests that population dynamics and point mutations played a key role in the virus's adaptation to humans.
The platypus genome provides insights into the evolution of venom components and a bird-like sex-determination system in mammalian ancestors. Researchers have found that platypus venom genes evolved by gene duplication of antimicrobial beta-defensins, mirroring an independent evolutionary pathway in reptiles.
A new scientific journal uses evolutionary biology to tackle pressing issues such as climate change, food safety, and infectious diseases. The journal features articles that discuss topics ranging from adapting to elevated atmospheric carbon dioxide to predicting the extinction of certain populations due to human-mediated stresses.
A team of scientists has developed a computer-controlled system that can drive the evolution of improved RNA enzymes without human input. The system, known as an 'evolution-machine,' uses selection pressure to guide the evolution process, resulting in an enzyme that is 90 times more efficient at using starting ingredients.
Researchers found a significant delay in the evolution of animal life due to low levels of oxygen and molybdenum in ancient deep oceans. This discovery provides new insights into the environmental conditions that led to the emergence of animal life.
Scientists at MIT have developed a mathematical approach to analyze protein patterns across species to identify natural selection in microbial evolution. By analyzing the 'selective signature' of genes, researchers can infer gene function and understand ecological shifts.
A study published in PNAS reveals that evolution drives animals to become more complex, with most branches evolving in the same direction. The researchers found that complexity increases as organisms adapt to their environments and compete for resources.
A new Stanford University study reveals that human cultural traits are subject to natural selection, with functional traits evolving at a slower rate than decorative ones. The research compares Polynesian canoe designs and finds that faster or slower evolution rates indicate the presence of natural selection.