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Search results for “Evolution”

1,000+ results for "Evolution"

What came first in the origin of life? A study contradicts the 'metabolism first' hypothesis

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.

SourceUniversitat Autonoma de Barcelona·JournalProceedings of the National Academy of Sciences·DateJan 8, 2010

Microcephaly genes associated with human brain size

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.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·DateDec 21, 2009

Charles Darwin: More than the origin

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.

SourceBotanical Society of America·JournalAmerican Journal of Botany·DateDec 9, 2009

January-February 2010 GSA Bulletin highlights

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.

SourceGeological Society of America·JournalGeological Society of America Bulletin·DateDec 3, 2009
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Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

The Center for Science Writings presents 'The Evolution of God,' Dec. 2

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.

SourceStevens Institute of Technology·DateNov 23, 2009

Biologists, educators recognize excellence in evolution education

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.

SourceAmerican Institute of Biological Sciences·DateNov 6, 2009

There's a speed limit to the pace of evolution, Penn biologists say

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.

SourceUniversity of Pennsylvania·JournalProceedings of the National Academy of Sciences·DateNov 2, 2009
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Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.

Ratchet-like genetic mutations make evolution irreversible

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.

SourceUniversity of Oregon·JournalNature·DateSep 23, 2009

Evolution still scientifically stable

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.

SourceMonash University·JournalProceedings of the National Academy of Sciences·DateSep 13, 2009

Study finds human population expanded during late Stone Age

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.

SourcePLOS·JournalPLOS ONE·DateJul 28, 2009
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Study of flower color shows evolution in action

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.

SourceUniversity of California - Santa Barbara·JournalProceedings of the National Academy of Sciences·DateJun 29, 2009

'Pelvis has left the building'

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.

SourceUniversity of Utah·JournalCurrent Biology·DateJun 4, 2009

Different genes cause loss of body parts in similar fish

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.

SourceU.S. National Science Foundation·JournalCurrent Biology·DateJun 4, 2009

Genome Research publishes special issue: Genomics and Darwinism

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.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateApr 30, 2009
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IU astronomer's discovery poses challenge to galaxy formation theories

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.

SourceIndiana University·JournalThe Astrophysical Journal Letters·DateApr 10, 2009

Scorpion biodiversity

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.

SourcePLOS·JournalPLOS ONE·DateApr 9, 2009

Hundreds of natural-selection studies could be wrong, study demonstrates

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.

SourcePenn State·JournalProceedings of the National Academy of Sciences·DateMar 30, 2009
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Dinosaur fossils fit perfectly into the evolutionary tree of life

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.

SourceUniversity of Bath·JournalSystematic Biology·DateJan 29, 2009
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SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Reverse evolution in real-time

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.

SourceInstituto Gulbenkian de Ciencia·JournalNature Genetics·DateJan 11, 2009

Charting HIV's rapidly changing journey in the body

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.

SourceUniversity of Rochester Medical Center·JournalPLOS Computational Biology·DateDec 11, 2008
Sky-Watcher EQ6-R Pro Equatorial Mount

Sky-Watcher EQ6-R Pro Equatorial Mount provides precise tracking capacity for deep-sky imaging rigs during long astrophotography sessions.

Sicilian word enters British genetic language

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.

SourceNorwich BioScience Institutes·JournalScience·DateNov 13, 2008

Evolution's new wrinkle

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.

SourcePrinceton University·JournalPhysical Review Letters·DateNov 11, 2008

Forced evolution: Can we mutate viruses to death?

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.

SourceRice University·JournalPhysical Review E·DateNov 10, 2008
Aranet4 Home CO2 Monitor

Aranet4 Home CO2 Monitor tracks ventilation quality in labs, classrooms, and conference rooms with long battery life and clear e-ink readouts.

Biologists, educators recognize excellence in evolution education

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.

SourceAmerican Institute of Biological Sciences·DateOct 14, 2008

Reproducing early and often is the key to rapid evolution in plants

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.

SourceYale University·JournalScience·DateOct 2, 2008

Mysterious snippets of DNA withstand eons of evolution, Stanford study

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.

SourceStanford Medicine·JournalGenome Research·DateOct 1, 2008

Scientists find 'redesigned hammer' that forged evolution of pregnancy in mammals

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.

SourceYale University·JournalProceedings of the National Academy of Sciences·DateSep 18, 2008
Kestrel 3000 Pocket Weather Meter

Kestrel 3000 Pocket Weather Meter measures wind, temperature, and humidity in real time for site assessments, aviation checks, and safety briefings.

Molecular sleuths track evolution through the ribosome

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.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalProceedings of the National Academy of Sciences·DateAug 18, 2008

Human brains pay a price for being big

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...

SourceBMC (BioMed Central)·JournalGenome Biology·DateAug 4, 2008

Survival of the fittest: even cancer cells follow the laws of evolution

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.

SourceFederation of American Societies for Experimental Biology·JournalThe FASEB Journal·DateAug 1, 2008
DJI Air 3 (RC-N2)

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Scientists fix bugs in our understanding of evolution

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.

SourceEuropean Molecular Biology Laboratory·JournalScience·DateJun 19, 2008

Evolution of an imprinted domain in mammals

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.

SourcePLOS·JournalPLOS Biology·DateJun 2, 2008
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Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Teaching evolution: Legal victories aren't enough

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...

SourcePLOS·JournalPLOS Biology·DateMay 19, 2008

Carnegie Mellon scientists unveil new tool to understand evolution of multi-domain genes

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 ...

SourceCarnegie Mellon University·JournalPLOS Computational Biology·DateMay 15, 2008

Geneticists at the American Museum of Natural History trace the evolution of St. Louis encephalitis

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.

SourceAmerican Museum of Natural History·JournalMolecular Phylogenetics and Evolution·DateMay 15, 2008
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Platypus genome unravels mysteries of mammalian evolution

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.

SourceCold Spring Harbor Laboratory·JournalGenome Research·DateMay 7, 2008

Not just for the monkeys: New publication shows evolution is everywhere

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.

SourceWiley·JournalEvolutionary Applications·DateApr 30, 2008

Evolution on the table top

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.

SourcePLOS·JournalPLOS Biology·DateApr 7, 2008
Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Human culture subject to natural selection, Stanford study shows

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.

SourceStanford University·JournalProceedings of the National Academy of Sciences·DateFeb 18, 2008