Darwinism
Articles tagged with Darwinism
Doctors favor explaining anxiety to patients as a human evolution ‘success story’
A new study found that mental health clinicians prefer evolutionary explanations of anxiety over genetic approaches, believing they provide a more positive outlook and can improve patient willingness to seek help. This shift could lead to more hopeful and therapeutically empowering attitudes towards anxiety treatment.
Botany’s answer to Darwin’s finches shows evolution in real time
Researchers studied evolution of Scalesia genus, finding lobed leaves evolved through multiple genetic pathways. The study highlights the flexibility and creativity of evolution, with new species forming and populations showing large genetic differences.
How ancient attraction shaped the human genome
Researchers found that long-standing mating preferences led to sex-biased interbreeding, resulting in the loss of Neanderthal DNA on X chromosomes. The study reveals a complex social history of human evolution, challenging the idea that survival of the fittest drove human migration.
On the origin (and fate) of plants that never bloom
A study by Kobe University reveals that plants reproducing solely through self-pollination likely arose from populations with extremely low genetic diversity. The research found that these species are highly successful at producing fruit and may have an evolutionary edge over outcrossing, raising questions about their long-term viability.
Galapagos birds exhibit ‘road rage’ due to noise
A new study reveals that Galapagos yellow warblers are changing their behavior in response to traffic noise, with those living near roads showing increased aggression. The birds adapt by adjusting the frequency of their songs to help them be heard above the noise.
What came first, life or evolution?
Researchers demonstrate key Darwinian evolution principles in self-replicating molecules, indicating evolution predates life. Competitive exclusion among these molecules curtails chemical diversification, shedding light on potential emergence of life from non-living materials.
New fossil reveals the evolution of flying reptiles
A new pterosaur species reveals key transitional changes between early and later groups, shedding light on the evolution of these flying reptiles. The complete specimen helps bridge the gap in understanding how they transformed from smaller to larger sizes.
Through the looking glass: A cross-chiral reaction challenges our definition of life
Researchers demonstrate the first cross-chiral exponential amplification of an RNA enzyme, potentially leading to the development of cross-chiral therapeutics and biotechnologies. The discovery suggests that a bioengineer can create a new form of biochemical evolution by using both left- and right-handed molecules.
How playing songs to Darwin’s finches helped UMass Amherst biologists confirm link between environment and the emergence of new species
Researchers from UMass Amherst have identified a key connection between ecology and speciation in Darwin's finches, famous residents of the Gal pagos Islands, Ecuador. The study shows that beak-driven changes to song impact species recognition, driving the separation of species.
Darwin’s fear was unjustified: Writing evolutionary history by bridging the gaps
A team of sedimentologists and stratigraphers found that gap regularity, not incompleteness, determines evolutionary history reconstruction. Incompleteness can be overcome with geological knowledge, enabling accurate reconstruction of evolution hundreds of millions of years ago.
AI-powered study explores under-studied female evolution
Researchers used AI to analyze over 16,000 butterfly images, finding both males and females contribute to diversity among species. The study resolves a century-old debate between Charles Darwin and Alfred Russel Wallace on the role of natural selection in female evolution.
A unified account of Darwinism’s varieties
A new study provides a unified account of Darwinism's varieties, exploring its connection to scientific theory, logic, and worldview. The authors argue that restricting Darwinism to science is not ideal, highlighting the importance of theoretical elements in structuring scientific inquiry.
Interspecies competition led to even more forms of ancient human – defying evolutionary trends in vertebrates
A new study reveals that competition between species played a major role in the rise and fall of hominins. The research found that the Homo lineage experienced an unprecedented number of new species emerging, contradicting traditional views on evolutionary patterns. Technology, such as stone tools and fire, may have driven this process.
Mediterranean marine worm has developed eyes “as big as millstones"
A Mediterranean marine worm has evolved massive eyes, rivaling those of mammals, to see in the dark. The worms use their exceptional vision to detect bioluminescent signals and may have a secret language through light communication.
The role of pollinators in the evolution of flowers with various sexual forms
A study by the University of Seville researchers confirms Darwin's hypothesis of precise pollination across all angiosperms, with a focus on heterostylous species. The findings show that floral traits and pollinators fit together like a jigsaw puzzle to promote accurate pollen transfer.
Modeling the origins of life: New evidence for an “RNA World”
Researchers at Salk Institute unveil an RNA enzyme that can accurately copy functional RNA strands and allow new variants to emerge over time. This discovery brings scientists closer to producing autonomous RNA life in the laboratory, potentially revolutionizing our understanding of the origins of life.
How does one species become many?
A global team of biologists used nearly two decades of field data from the Galápagos Islands to study the relationship between beak traits and individual longevity in four species of Darwin's finches. The researchers found that each species' unique beak traits correspond to fitness peaks, which are essential for survival.
Bacteria-virus arms race provides rare window into rapid and complex evolution
Scientists observe rapid evolutionary changes in bacteria and viruses, leading to the emergence of complex ecological patterns. The study reveals nestedness and modularity as two prominent repeating patterns in bacterial-phage interactions.
Researchers' analysis of perching birds points to new answers in evolutionary diversification
A study by Miles, Ricklefs, and Losos challenges traditional explanations for species diversity, suggesting a single underlying process drives morphological diversification in diverse clades. The researchers analyzed passerine bird morphology data, including island radiations like Darwin's finches and Hawaiian honeycreepers.
Evolving chemical system changes its environment
Researchers from the University of Groningen created a synthetic system that exhibits eco-evolutionary dynamics, where replicators adapt to their environment and undergo natural selection. The system consists of two different ring sizes that compete for a common building block, with one replicator emerging as dominant in certain enviro...
The evolution of societal cooperation
Researchers developed a model that considers multiple coexisting social norms and studied how these norms might compete as individuals learn from one another. Key findings include the success of 'stern judging' in promoting cooperation, particularly in situations where individuals show a preference for interacting within their own group.
ProSocial World: How the principles of evolution can create lasting global change
A new article by David Sloan Wilson explores how cultural evolution happens and how it can be harnessed for the greater good. The article highlights the importance of prosociality, social control, and symbolic thought in shaping human societies.
Eye-opening origin story: Scientists trace key innovation in our camera-like vision to bacteria
Researchers at University of California - San Diego found that vertebrates acquired a special protein from bacteria more than 500 million years ago. This discovery reveals a new piece of genetic material introduced from foreign bacterial genes, leading to unique functionality in vertebrate eyes.
Scientists discover hidden crab diversity among coral reefs
A new study reveals a surprising exception to the rule of uniformity across the Indo-West Pacific coral reef ecosystem. Chlorodielline crabs with overlapping ranges have uniquely shaped gonopods, but otherwise appear identical, suggesting genetic divergence in different geographic areas.
Researchers discover new multicellular bacteria species
Researchers have isolated a novel bacterial species, HS-3, that displays complex multicellular behavior and a reversible two-phase life cycle. The discovery reveals a previously unknown mechanism for the emergence of multicellularity in bacteria, suggesting that environmental factors played a crucial role.
Darwin's giant daisies and evolution
Scientists have gained insight into how evolution takes place and how several species evolved from a single one by studying trees found in the Galapagos Islands. The research revealed genetic variations associated with vascular development, growth, adaptation to salinity, and flowering time.
Evolve… innovate… repeat: Scientists peel back the layers of virus-host evolution and innovation
Researchers track changes in fitness landscapes as viruses and hosts undergo ongoing survival competition. The study reveals that coevolution propels adaptations, with viruses innovating to overcome host resistance. This new understanding provides a quantitative framework for predicting evolution in coevolving ecological communities.
Study suggests that most of our evolutionary trees could be wrong
New research challenges centuries-old scholarship on animal classification by morphology, instead favoring molecular data for a better fit with geographical distribution. Convergent evolution is found to be widespread and often misleading, with famous examples such as flight in birds, bats, and insects
'Fuel of evolution' more abundant than previously thought in wild animals
Researchers found that wild animal populations exhibit significant genetic differences in traits related to reproduction, enabling rapid adaptation to environmental changes. The study's findings suggest a potential speed-up in evolution due to natural selection, with implications for species' adaptability to climate change.
Study points to physical principles that underlie quantum Darwinism
The study investigates the role of physical principles in quantum Darwinism, finding that it relies on non-classical features, specifically entanglement, to emerge via natural selection. The researchers employed generalized probabilistic theories to analyze and compare different physical theories.
Gradual evolution is back: Darwinian theory of gradual process explained in new research
Researchers developed a statistical model to explain sudden changes and stasis in species history, finding they can be attributed to natural variability. The study supports Darwin's theory of gradual evolution by demonstrating that even abrupt changes are underpinned by directional selection.
Discovering new drugs with Darwin
Chemists at UNIGE have developed a new method to rapidly generate millions of molecule combinations using DNA-pairing processes, finding the best match for target proteins within two weeks. This technique uses evolutionary forces to amplify the best combinations and generates diversity.
The new field of Flipon genetics explains how we evolve faster than Darwin thought possible
Flipon genetics proposes that evolution happens on a faster time scale than Darwin imagined, with rapid adaptations occurring in real-time within individuals. This is achieved through the simple sequence repeats of DNA, which can adopt alternative shapes and transmit adaptations to offspring.
Belief in social Darwinism linked to dysfunctional psychological characteristics
A new survey study links belief in social Darwinism with dysfunctional psychological characteristics such as exploitative attitudes, hostility and low self-esteem. Social Darwinists tend to admire strength and power despite having a fragile self-image.
Death enables complexity in chemical evolution
Researchers at the University of Groningen found that introducing a molecule that attacks self-replicating fibres allows for the emergence of more complex structures. This discovery solves Spiegelman's monster, which previously hindered the origin of complexity in life.
Cyber-evolution: How computer science is harnessing the power of Darwinian transformation
Researchers in Arizona State University's Biodesign Center explore how evolutionary computation simulates nature's evolution principles, enabling machines to find novel solutions to complex problems. The study highlights six hallmarks of Darwinian evolution and demonstrates progress in applying these features to AI and engineering design.
Natural selection plays major role in an organism's capacity to evolve and adapt
A recent study found that strong selection pressure enhances evolvability more effectively than weak selection, allowing populations to evolve new traits. This discovery challenges previous assumptions about the relationship between selection on fitness and robustness.
Genetic code evolution and Darwin's evolution theory should consider DNA an 'energy code'
Rutgers scientists expand Darwin's theory of evolution to consider DNA stability as an energy code, enabling analysis of the human genome and explaining long-term survival of species characteristics. The study's findings provide new ways to analyze genomes and potentially improve selection of DNA targets for therapeutics.
Butterfly color diversity due to female preferences
Researchers from Sweden and Germany have found that female influence butterfly color diversity by mating with colorful males. The study suggests that Darwin's model of sexual selection explains the patterns better than Wallace's model, resolving a long-standing argument.
Origins of life: Chemical evolution in a tiny Gulf Stream
Researchers at LMU München report a hydrothermal mechanism that could have promoted the prebiotic evolution of self-replicating molecules. In an experiment, warm water circulation through pores stimulates RNA strand replication, overcoming the initial problem of double-stranded RNA formation.
How does cooperation evolve?
A study by Max Planck Institute researchers found that multicellular clusters can promote cooperative interactions between organisms, leading to a previously unknown mechanism driving the evolution of mutual aid. This discovery challenges the traditional view of evolution as a competition for resources.
One of Darwin's evolution theories finally proved by Cambridge researcher
Researchers have proved one of Charles Darwin's evolution theories for the first time, showing that mammal subspecies are crucial to long-term evolutionary dynamics. The study, led by Laura van Holstein, found that subspecies play a pivotal role in shaping the future of species, particularly in response to habitat disruption.
How the development of skulls and beaks made Darwin's finches one of the most diverse species
A new study reveals that the rapid evolution of Darwin's finches and Hawaiian honeycreepers was linked to their beaks and skulls. The researchers found that these birds had a stronger association between their beaks and skulls than other bird lineages, allowing for more versatile evolution but constrained along specific directions.
New fossils shed light on how snakes got their bite and lost their legs
Scientists discover ancient legged snake Najash, which shed light on the evolution of snakes' flexible skull. The study reveals that snakes possessed hind legs for 70 million years before losing them.
Island lizards are expert sunbathers, and researchers find it's slowing their evolution
Researchers found that island lizards use behavioral thermoregulation to shield themselves from natural selection, slowing physiological evolution. This contradicts the 'island effect', which predicts faster evolution on islands.
Clever budgies make better mates
A study found that male budgies who exhibit intelligent behavior, such as solving problems for food, become more appealing to females. The research suggests a possible evolutionary link between cognitive abilities and mate selection in birds.
A curious branch of plankton evolution
A study of Truncorotalia fossils found rapid shell shape changes 5.1 million years ago, potentially observing quantum evolution at a species level. This challenges previous theories of gradual evolution in planktonic forams.
How Sacred Ibis mummies provided the first test of evolution
The discovery of mummified Sacred Ibises in France after Napoleon's conquest of Egypt played a significant role in delaying the acceptance of evolutionary theory. The debate between Georges Cuvier and Jean-Baptiste Lamarck over these birds' classification highlighted the influence of charismatic personalities on scientific thought.
'Bin chicken' plays unique role in story of evolution
A French scientist's discovery of ibis mummies in Egypt led to a pivotal debate on evolution, with naturalist Georges Cuvier opposing Lamarck's emerging ideas. The study highlights the significance of considering dominant personalities' biases in scientific research.
The spark that created life
Researchers at Monash University have discovered structural capacitance elements in mutated proteins associated with human diseases, particularly cancers. These elements enable mutations to trigger a gain-of-function, shedding light on protein evolution and the engineering of highly evolvable proteins.
Evolutionary origins of animal biodiversity
Research team analyzed thousands of features across all living animal groups to create a 'shape space' for animal body plans. The results show that fundamental evolutionary change occurred in fits and starts, with animal designs continuing to evolve to the present day.
Study confirms truth behind 'Darwin's moth'
Researchers found that pale peppered moths are more camouflaged against lichen-covered tree bark than dark moths, making them less likely to be eaten by birds in unpolluted woodland. This supports Darwin's theory of evolution by natural selection and provides key evidence for the evolutionary advantage of camouflage.
How brightly colored spiders evolved on Hawaii again and again...and again
A new study reveals that stick spiders have evolved and differentiated into distinct ecological types on each Hawaiian island, with remarkable predictability in their physical traits. The research sheds light on the origins of biodiversity and highlights the need for conserving nature's forms.
The origin of a new species of Darwin's finches
Researchers from Princeton University and Uppsala University report the origin of a new lineage of Darwin's finches through hybridization between two distinct species. The study reveals that reproductive isolation was established in just two generations, with the new lineage becoming ecologically competitive and unique.
How the Galapagos cormorant lost its ability to fly
Researchers discovered genetic changes in the Galapagos cormorant that led to its loss of flight and also contribute to human bone development disorders. The study provides insights into the evolution of limb size and may lead to new treatments for people with skeletal ciliopathies.
Promiscuity slows down evolution of new species
A new study reveals that promiscuity in birds slows down the formation of new species, contradicting conventional wisdom. Polygamous bird species, which breed with multiple partners, are less genetically diverse than monogamous species.
New study gives weight to Darwin's theory of 'living fossils'
A new study confirms the existence of 'living fossils' by measuring evolutionary rates in the tuatara, a reptile that has remained relatively unchanged for millions of years. The research found that the tuatara's anatomy is remarkably conservative and shows slow evolution compared to its fossil relatives.
Climate change altered the natural selection -- large forehead patch no longer a winner
Researchers at Uppsala University found that climate change upends the selection of face characteristics in collared flycatchers, with rising spring temperatures leading to a reversal in fitness selection. The study suggests that the balance of investment in ornaments and survival was fundamentally altered over the study period.
Molecular clocks will turn back time on what wiped out the dinosaurs
Researchers from the University of Bath will investigate mass extinction using genetic and fossil analyses to understand patterns of extinction and species formation. They hope to find evidence of higher extinction rates before the K-Pg boundary, shedding light on recovery rates after the event.