Articles tagged with Evolutionary Genetics
Researchers detected three instances of cross-species mating that influenced the evolutionary paths of old world mice, suggesting hybridization may not be an evolutionary dead end. The study found shared genetic code between two species of mice from Europe and Africa, with implications for human genetics and health.
A recent study published in the journal genesis reveals an intact Hox cluster in the Crown of Thorns starfish, which is a surprising result given the relatively disorganized clusters found in sea urchins. This finding has implications for understanding evolutionary-developmental biology and may suggest new methods for mitigating damage...
Computer analysis of genetic data and supercomputing capabilities have enabled researchers to recreate the bird tree of life, revealing a burst of evolutionary growth after 15 million years. The study also uncovered new findings on birdsongs, feathers, biodiversity, and bird evolution.
A four-year project studied the genome sequence of 48 bird species, shedding light on how they evolved and adapted. The research revealed new candidate gene associations with vocal learning, skeletal development, and plumage for mating display.
A genetic study of 48 bird species reveals most modern birds diversified after dinosaurs became extinct, with some lineages emerging around 100 million years ago and others in a window of less than 10 million years afterwards.
A UT Arlington team developed a new model for snake venom evolution, suggesting that venom genes evolved independently in distinct lineages of reptiles. The study found similar expression levels of venom gene families in python oral glands and brain tissue, challenging the traditional view of a core venom system developing first.
The study characterizes genetic diversity across Sub-Saharan Africa, providing valuable resources for medical researchers. It identifies 30 million genetic variants, including those associated with high blood pressure and infectious diseases like malaria and Lassa fever.
Researchers studied molecular tools to understand the influence of the Isthmus of Panama on freshwater shrimps. The results showed that sister species remained genetically isolated despite potential crossing through a channel.
Marnie Halpern has made significant contributions to understanding the patterning of the nervous system using novel genetic approaches. Her research focuses on regional specializations within the neural tube, with a particular emphasis on brain asymmetry.
A Tel Aviv University study reveals that idiosyncratic acts are key to the survival of traditional rituals and practices. By adding a personal touch to culture, individuals can ensure simplicity, flexibility, and creative license in these long-practiced customs.
A team of scientists has reconstructed a detailed 'tree of life' for turtles, revealing their closest relatives across the animal kingdom. The study uses next-generation sequencing technologies to refute long-held debates about turtle evolution and places turtles in a new group called 'Archelosauria'.
A study by Denis Duboule's team found that the formation of digits and external genitals involves a similar group of genes, with small modifications controlling their development. The researchers used chromosome conformation capture to demonstrate that a single regulatory DNA sequence controls both processes.
Researchers at San Francisco State University have discovered that Hox genes are employed in the development of a range of vertebrate features beyond fins and limbs. The study reveals that this ancient genetic program is utilized in patterns such as barbels, vents, and claspers, expanding our view of its role in morphological diversity.
A recent study by Brandeis University professor Nelson Lau reveals that the PIWI pathway, which protects against genetic parasites, has limitations. The pathway's effectiveness is crucial for human fertility and development, yet transposons continue to make up a significant portion of the genome.
Rice University researchers have developed PhyloNet, an open-source software package that models more detailed evolutionary networks from genetic data. The software uses a maximum likelihood method to infer network models that better describe the evolution of certain groups of species than traditional tree models.
A landmark study published by an international team of over 100 researchers reconstructs the insect tree of life, answering longstanding questions about their origins and evolution. The study reveals that insects originated at the same time as early terrestrial plants and developed wings 400 million years ago.
Research at Rockefeller University resolves the long-standing debate on Rap1's role at telomeres, revealing that human Rap1 plays a minor role in protecting telomeres. The study contradicts previous findings and sheds light on the protein's potential unrelated function.
A Concordia University study reveals that hybrid fish become genetically robust like their purely wild counterparts within a few generations, providing hope for conservation efforts. This finding has implications beyond fish, with similar conclusions drawn about wolf species previously exposed to hybridization.
Researchers found that knocking out a single enzyme is responsible for changing blue penstemon flowers to red. The study reveals a predictable genetic change behind the evolution from blue to red, with reverse changes unlikely.
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.
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.
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 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.
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.
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.
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 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.
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.
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...