Articles tagged with Evolutionary Genetics
Researchers find genetically similar bioluminescent organs in two squid species, suggesting predictable evolution of complex traits. The study's novel bioinformatic approaches indicate that convergent phenotypes are associated with the convergent expression of thousands of genes.
An analysis of statements from 51 recognized civilian heroes found that most describe their acts as intuitive, rather than deliberate. This suggests that high-stakes extreme altruism may be largely driven by automatic, instinctual processes.
A comprehensive new evolutionary 'tree of life' for the tropical cotinga family has been generated, providing insight into the evolution of over 60 species. The study reveals that sexual selection appears to have played a role in the evolution of non-plumage gender differences in some cotinga species.
Researchers used test tube experiments to measure growth rates and DNA mutations of 8 different Pseudomonas bacteria species. They found that populations within the same strain evolved in parallel despite genetic differences.
Researchers used zebrafish to study a rare genetic disorder affecting a boy and his uncles, identifying a mutation in the RPL10 gene as the likely cause of their symptoms. The findings provide crucial first steps towards further research into the molecular details of the disease.
Researchers discovered that lung cancers can exist undetected for many years due to unique genetic faults in separate areas of the tumor. The study highlights the need for better early detection methods to improve treatment outcomes, as two-thirds of patients are diagnosed with advanced disease when treatments are less effective.
Cichlids' egg-spots developed through insertion of a mobile genetic element influencing pigmentation gene expression. This discovery provides insight into the evolution of novel traits and their regulatory mechanisms.
A study analyzing violin shapes from 400 years of history reveals that imitative designs cluster together, with specific features reflecting familial origins. The analysis highlights the role of genetic lineages and human relation in shaping violin architecture.
A plant scientist has applied morphometric analysis to violin design, revealing parallels between leaf shapes and instrument design. The study found that specific shape attributes differentiate instruments and correlate with historical time, demonstrating the influence of history, imitation, and genetics on violin evolution.
ASU researchers are developing artificial genetic polymers composed of threose nucleic acid (TNA) to address emerging health and defense threats. The team plans to search large combinatorial pools for TNA molecules with desired functional properties.
Researchers mapped red fox ancestry across 1,000 individuals worldwide, revealing the species evolved into a new distinct species in North America after 400,000 years. The study suggests climate change and environmental shifts impacted global distribution.
A recent study has confirmed the presence of the Gulf Sand gecko in inland Oman, bridging a previously unknown distribution gap. The discovery was made by an international team of herpetologists using genetic data and habitat analysis.
Researchers identified a single gene central to monarch migration and another controlling pigmentation. Migratory butterflies have reduced levels of collagen IV α-1, increasing flight efficiency, while a new gene functions as a pigmentation switch.
Researchers at Trinity College Dublin discovered a mechanism called 'mutational robustness' that explains how gene duplication leads to novel functions and survival across long evolutionary timescales. This breakthrough has implications for understanding genome evolution and the importance of redundancy in organisms.
A new genetic operating system enabled the emergence of bilateral animal body plans by facilitating the formation of a mesoderm layer, which is absent in radial organisms. This 'operating system' was linked to an ancient protein called TRF2, found in bilateral animals but not non-bilaterian animals.
A 2,330-year-old skeleton from southern Africa provides clues to early modern human prehistory and evolution. The study sequenced the man's mitochondrial DNA, revealing a unique genetic profile that sheds light on human origins.
Researchers at UMass Amherst and other biologists investigate how bats sense their environment using advanced imaging techniques and molecular biology. The study aims to reveal the genetic, developmental, and anatomical basis of natural selection for sensory structures in mammals.
Scientists from Scripps Research Institute will develop an artificial immune system using a $7.9 million DARPA grant, creating vast libraries of molecules to detect and neutralize biological threats. The team will leverage automation and advanced technologies to rapidly synthesize and screen compounds.
A study published in Alcoholism: Clinical and Experimental Research found that people's perception of alcohol taste varies due to genetic differences in bitter taste receptors. These differences can influence drinking habits, with some individuals experiencing more bitterness and lower liking for alcoholic beverages.
A study published in PNAS found that the Foxp2 gene enhances learning ability, allowing humans to acquire and creatively manipulate spoken language more quickly than other animals. The gene modulates the balance between conscious and unconscious learning processes, enabling faster language acquisition.
Researchers studied lamprey embryology to understand the evolutionary origins of modern vertebrates. They discovered that Hox genes play a crucial role in hindbrain segmentation, which is conserved across vertebrates.
A group of researchers recommend applying evolutionary biology to combat modern threats, proposing gene therapies, drought-resistant crop varieties, and conservation strategies to protect land with high genetic diversity. This approach can help develop more robust solutions to societal problems and promote sustainable development.
A new study highlights the need for better implementation of evolutionary approaches to address societal challenges. The research suggests that applying evolutionary biology can help reduce the escalating problem of antibiotic resistance and chronic disease costs.
Researchers at Helmholtz Munich have created a novel fluorescent marker that excites in the far-red spectrum and emits in the infrared range, enabling better-quality images with advanced bio-imaging. This technology allows for the delineation of tumor and metastasis, tracking drug responses within whole-body imaging.
Researchers identified a shared gene responsible for flashy markings in two butterfly families, tracing it back to their ancient ancestors. This finding suggests that simple traits may follow a single evolutionary road, potentially revolutionizing our understanding of evolution.
A new paper published in Nature Communications suggests that simple traits like butterfly wing patterns may have a shared genetic source. Researchers identified a single gene, WntA, responsible for the evolution of similar color patterns in two distantly related butterfly species.
Researchers at Stanford University School of Medicine have mapped the binding sites and cellular expression patterns of regulatory factors in fruit flies, roundworms, and humans. The study identifies shared and distinct patterns across species, shedding light on how genes are turned on and off.
A newly discovered species of ant, Mycocepurus castrator, has been found to support the theory of sympatric speciation, where a new species develops within a single colony. The research team found that the parasitic ants were genetically close to their host, but no longer reproductively compatible and had stopped reproducing together 3...
Researchers discovered a subset of microRNAs that regulate sex differences in fruit flies, with implications for understanding human developmental defects and disease. The study found that these small RNA molecules orchestrate complex genetic programs that shape the structures distinguishing males and females.
A University of Utah-led study identifies a genetic variation in Tibetans that contributes to their adaptation to high altitudes. The EGLN1 gene change protects Tibetans from complications caused by low oxygen levels, allowing them to thrive in thin air.
Studies on Fukushima radiation impact birds, monkeys, butterflies, and plants with population declines, genetic damage, and stress responses observed. Chronic low-dose radiation exposure results in genetic damage and mutation rates in reproductive cells.
A team of scientists has found that genetic changes in a bacterial pathogen may be caused by chance environmental events rather than genetic mutations. The study, published in PNAS, analyzed 149 genomes of Salmonella enterica serovar Paratyphi A and found that the pathogen had not changed dramatically over its 450-year history.
Sean Curran, a USC researcher, has been awarded the GSA's 2014 Nathan Shock New Investigator Award for his contributions to understanding the vital roles of metabolism in aging. His work aims to identify evolutionarily conserved mechanisms that regulate cellular and organism survival and longevity.
Researchers found that prestin, a key hearing gene, has evolved independently to play a critical role in echolocation of bats and dolphins. The protein enables these animals to navigate through murky waters or find food in the dark using high-frequency sound waves.
A comprehensive genetic survey of captive giant pandas reveals high levels of diversity and low inbreeding rates, indicating a healthy population. The study's findings suggest that captive breeding centers can successfully release pandas into the wild with proper selection criteria.
A team of researchers from Kansas State University has completed a chromosome-based draft of the wheat genome, providing a valuable resource for plant science researchers and breeders. The genetic blueprint will enable the rapid location of specific genes controlling complex traits such as yield, grain quality, and disease resistance.
Scientists have discovered that ancient protein-building enzymes have acquired new functions in humans, including producing variants with diverse biological activities. These variants are produced only in specific cell types and appear during certain stages of development, highlighting a previously unrecognized layer of biology.
A groundbreaking study by Harvard University researchers shows that orb-weaver spiders do not share a single origin, contrary to long-held popular opinion. The study's findings suggest that the orb web evolved independently in two groups of spiders, with distinct behaviors and silk characteristics.
Rapidly accumulating molecular sequence data is changing our understanding of major animal groups' evolution. Organismal biologists are needed to ensure their scenarios remain consistent with new information and evaluate alternative perspectives.
A genome-wide analysis reveals that friends are genetically similar to each other, with an average of 1% DNA in common. The study suggests that social relationships can drive evolutionary advantages, such as increased immunity against diseases.
Researchers have found that viral protein sequences matching a consensus sequence are more likely to be transmitted than those that deviate from the consensus. This 'fitness bottleneck' effect allows for a window of opportunity to prevent or limit infection using drugs or vaccines. The study suggests that targeting infected cells for k...
A new study found that about half of the variation in chimpanzee intelligence can be attributed to genetic factors, shedding light on the cognitive abilities of primates. The research suggests that differences in cognition may have arisen around 5 million years ago in the common ancestor of humans and chimpanzees.
A team of scientists has identified a master regulatory gene for sex determination in the green alga Volvox carteri, which shows how it evolved from a more primitive mating system in a close relative. The discovery may provide a possible blueprint for the origin of sexes in other multicellular organisms.
Researchers discovered a significant difference in the contents and distribution of mobile DNA elements between fruit fly populations on opposite sides of Evolution Canyon. The study found that these repetitive sequences are increasingly recognized as agents of adaptive change, influencing stress resistance and mating.
A new biosensor at the University of British Columbia helps optimize bio-refining processes by sniffing out bacterial networks that break down wood polymer. The discovery could lead to more tunable industrial processes and unlock the potential of lignin, a promising feedstock.
The discovery of the electric eel genome sequence sheds light on the genetic blueprint used to evolve complex, novel organs. Researchers found that fishes with electric organs have evolved six times in history to produce electricity outside their bodies.
Researchers have identified a crucial component of human language development in fruit flies, revealing the biological basis of operant learning. The study found that flies with a compromised FoxP gene failed to learn tasks, similar to human patients with FoxP mutations.
A Boston University School of Medicine study found that women who had their last child after age 33 had twice the odds of living to 95 years or older compared to those who had their last child before age 29. This suggests that women may be driving the evolution of genetic variants that slow aging and increase longevity.
Researchers used experimental evolution to study E. coli populations under strong and mild antibiotic selection conditions. They found higher cross-resistance in strongly selected strains with increased pathway-specific mutations.
Scientists have identified a 'weakness' in the clover genome that biases species to evolve the same trait. In six related clover species, genetic deletions led to the development of a cyanide-less trait, suggesting constrained evolution.
A study published in Science found that crows select mates with similar plumage colors due to genetic factors. The researchers identified a specific genomic region responsible for coloration and visual perception, suggesting a possible evolutionary mechanism behind species separation.
Researchers resurrected an ancient ancestor of a human protein and created millions of alternative histories to test the role of chance events in evolution. They found that two extremely unlikely mutations were necessary for the protein's modern-day function to evolve.
Scientists identified a gene regulatory switch in cattle embryos that led to the reduction of toes and transformation into cloven hooves. The discovery provides insights into the molecular history of evolution in even-toed ungulates, shedding light on their unique adaptations.
Research on genetics of sex determination explores the evolutionary loss of Y-chromosomes and mechanisms preventing self-fertilization. The collection includes studies on yeast, nematodes, maize, and Brassicaceae, shedding light on the biological processes behind sex differences.
A team of computer theorists and evolutionary biologists identified an algorithm to describe the strategy used by genes during sexual recombination, addressing a long-standing paradox in evolution. The multiplicative weight update algorithm helps explain how natural selection and diversity interact.
A gene study has identified the genetic differences that distinguish sheep from other animals, including humans, cattle, and pigs. The findings could aid in developing DNA testing to improve livestock breeding programs.
Researchers at Virginia Tech Carilion Institute create EvoCor, a search engine that quickly identifies genes functionally linked to specific biological processes. This breakthrough tool aids in discovering complex molecular mechanisms and may lead to new therapeutic targets for diseases like cancer and Alzheimer's.
Researchers report that Hawaiian crickets have lost their songs due to a natural defense mechanism against parasitoid flies. The silent crickets avoid the deadly flies and still mate by positioning themselves near singing males, showcasing convergent evolution in action.
Recent research emphasizes the significance of gene flow in plant populations, counteracting forces of mutation, genetic drift, and selection. Gene flow between populations can be surprisingly far-reaching, even among stationary individuals, with some studies detecting alleles from hundreds to thousands of meters away.
Researchers mapped the epic evolution of a 'ring species' using genomic analysis, revealing complex divergence and hybridization. The Greenish Warbler's range expansion involved periods of geographic separation and interbreeding.