Articles tagged with Evolutionary Genetics
A genetic gene known as cortex enables butterflies to mimic each other's bright patterns, while causing British moths to turn black amidst pollution. Researchers found the same gene responsible for color evolution in both butterflies and moths.
Researchers have located a gene called cortex that influences the brilliant patterning of <i>Heliconius</i> butterfly wings and is also associated with the evolution of 'sooty' wings in peppered moths. The discovery provides insights into the mechanisms behind wing pattern variation and diversity in butterflies and moths.
Researchers Richard Benton and Ben Lehner received the 2016 EMBO Gold Medal for their groundbreaking work on insect olfaction and developmental biology. They discovered novel genes in odorant receptors, shedding light on the evolution of scent perception, and revealed stochastic variances in gene expression driving phenotypic diversity.
The study reveals dozens of genes that allow corals to coordinate their response to environmental changes and explains the origin of hard skeleton-forming genes. The database will help researchers understand which coral species may survive or succumb to climate change.
A team of scientists analyzed multiple studies on three well-known viral families to understand how viruses evolve and increase their genetic diversity. They found that segmented RNA viruses can replicate with a single parental line, but reassortment between viruses is limited by physical and molecular constraints.
A UCL-led study identifies five genes controlling nose and chin shape, providing new insights into human face evolution and potential forensics applications. The study analyzed over 6,000 individuals with varied ancestry and found specific genes influencing facial features.
Fuentes builds on the extended evolutionary synthesis, arguing that evolution is a complex mix of biology, ecology, behaviors, chemistry, and history. Anthropologists can combine these approaches for a more nuanced understanding of humanity.
Researchers have identified the genes responsible for producing the red pigment in bird species, linking it to detoxification processes and suggesting a link between mate quality and genetic fitness. The discovery provides new insights into the evolution and ecology of red coloration in birds.
A study on the seed beetle Callosobruchus maculatus found that genetic links between traits favoring one sex may explain same-sex sexual behavior (SSB), with increased SSB linked to improved reproductive performance in siblings of the opposite sex.
Researchers have mapped the 'fitness landscape' of a jellyfish gene, showing how multiple mutations interact to affect protein function and fluorescence levels. The study provides insights into how genetic changes combine to influence traits and diseases.
The carrot genome study sheds light on its domestication history and reveals new insights into the accumulation of carotenoids. Researchers found a new gene responsible for this process, which was likely inadvertently selected for by early growers.
New research from the University of Oxford used bacteria to show that acquiring duplicate copies of genes can provide a template for developing new traits. Gene duplication has been proposed as playing a key role in innovation since the 1970s, but these findings add important empirical evidence to support this theory.
A recent study published in Nature Communications found a single gene, retinoblastoma (RB), to be crucial for the evolution of multicellularity. The researchers discovered that RB is a tumor suppressor and plays a fundamental role in regulating cell cycles, making it easier to evolve multicellular life.
A recent study analyzed genome-wide data from 51 ancient Eurasians, providing insights into the genetic history of modern humans in Eurasia before agriculture began. The findings indicate a decrease in Neandertal ancestry and suggest natural selection against certain variants.
Researchers have identified a key action of a watershed gene crucial to bone formation and the evolution of vertebrates. The Sp7 gene emerged about 400 million years ago, expanding life diversity and programming bone-secreting cells.
Researchers exposed small worms to artificial climate change, finding that a half-degree warmer soil caused rapid genome changes. The study provides insight into evolution's ability to adapt to climate change, suggesting it may be more resilient than previously thought.
Scientists have produced proto-nucleotides resembling RNA's nucleobases through simple laboratory reactions, advancing understanding of life's origins. The discovery has implications for the probability of life existing elsewhere in the universe.
A specific gene, HMGA2, has been identified as the key to the evolution of smaller beaks in medium ground finches in response to a drought-induced food shortage. The researchers found that the gene comes in two forms, with one dominant in birds with small beaks and the other in those with large beaks.
A new DNA analysis suggests that North American mammoths interbred more frequently than previously thought, blurring the lines between species. The study found that woolly and Columbian mammoths could produce fertile offspring, contradicting historical notions of separate species.
Researchers from the University of Adelaide used ancient DNA to study the evolution of giant bears in both North and South America. The study found that these bears belonged to a distinct subfamily (Tremarctinae) and had independently evolved from small herbivorous bears.
A new study by J. Andrew Gillis at the MBL Whitman Center found striking similarities between the genetic mechanism used to pattern gill arch appendages and human limbs.
Researchers found striking similarities between the genetic mechanism used in human limb development and that of skate embryos' gill arches. The study suggests that limbs may have evolved from sharks' gills via a critical gene called Sonic hedgehog, supporting a century-old theory.
New research suggests that human brain size and body size are genetically linked, with increased brain size leading to a correlated response in body size. This phenomenon played a significant role in the evolution of larger brains and bodies in humans.
A recent study analyzing 40 Zika virus strains identifies significant changes in amino acid and nucleotide sequences, diverging between Asian and African lineages. The data suggests the strains evolved from a common ancestor, with human isolates more closely related to the French Polynesia/2013 strain.
Scientists have mapped thousands of genetic mutations in yeast to understand their impact on cell survival. The study found that different combinations of mutations can influence survival and revealed a new technique for predicting the shapes of molecules encoded in our genes.
A team of researchers has created the first comprehensive in vivo fitness landscape of a gene, which provides a way to visualize and predict evolution. The findings show that about 1 percent of point mutations are beneficial to an organism, while 42 percent are harmful, and two harmful mutations interacting can lead to more harm.
Researchers discover a 'green beard' system in fungi to decide on compatibility and actively seek out favorable cells. This mechanism is necessary and sufficient to determine 'self' identity, enabling cooperation between non-genealogical relatives.
Researchers analyzed 16 ant species to understand queen-worker differences, finding conserved gene sets associated with traits like queen numbers and worker sterility. This study provides insight into the evolution of gene expression across ant species.
Researchers found that plants can only withstand a limited number of genetic changes before population collapse and extinction. The study challenges common thinking on plant adaptability and has significant implications for agriculture and horticulture in the face of rapid climate change.
Researchers analyzed a complete Neanderthal Y chromosome, revealing differences with modern human Y chromosomes that may have discouraged interbreeding. The findings suggest that genetic incompatibilities, such as those affecting male-specific antigens, played a role in the divergence of humans and Neanderthals.
A new approach detects shifts in genetic diversity when crops hybridize with wild plants, highlighting the risk of losing rare alleles and altering evolutionary trajectories. This method could improve conservation efforts by identifying areas where crop gene escape is most prevalent.
A new species of fruit fly, Drosophila yakuba, has evolved to consume yeast growing on the toxic noni fruit. Genetic analysis revealed that this adaptation occurred around 30,000 years ago, providing a unique opportunity to study evolutionary changes and genetic adaptations in response to environmental pressures.
A vegetarian diet may have permanently shaped the human genome, favoring a mutation that regulates fatty acid production. This mutation is more frequent in Indian populations with primarily plant-based diets compared to traditional American meat-eaters.
Virginia Tech researchers have sequenced the Y chromosome of malaria-spreading mosquitoes, a key genetic driver of sex-determination and male fertility. The findings will help develop more effective mosquito control strategies by creating sterile males or reducing female populations.
A recent study has identified malaria's origins in bird hosts, with the parasite then spreading to bats and other mammals before reaching humans. The research, led by Cornell University's Holly Lutz, provides a comprehensive analysis of malaria's genetic code, offering insights into its adaptability and evolution.
Researchers found that flies exhibit anxiety-like behaviors in response to heat stress, solitary confinement, and Valium treatment. The study identifies several new genes related to anxiety behavior in flies, shedding light on the evolutionary origins of anxiety.
Researchers at Arizona State University have found that X and Y DNA swapping may occur much more frequently than previously believed. This promiscuous swapping could lead to a better understanding of human history, diversity, health, and disease, as well as blur rigid chromosomal interpretations of sexual identity.
Researchers discovered that synonymous mutations in genes can significantly impact an organism's fitness and survival. In a study on the bacterium Methylobacterium extorquens, scientists found that highly beneficial synonymous mutations enabled bacteria to quickly evolve and adapt to their environment under strong selection conditions.
Researchers at ETH Zurich have developed a new genetic method that enables the recording of a vast range of antibodies in an individual with high precision. This breakthrough can be used for vaccine development and early disease detection, offering significant advantages over previous antibody detection techniques.
Researchers will investigate genetic mechanisms controlling polyphenism in nematode worms, a phenomenon where species develop different physical traits based on their environment. The study aims to understand how environmental inputs trigger developmental 'switches' that enable accelerated evolution.
A University of Kansas researcher is questioning traditional methods for defining species by studying the genetic basis for species differences in lizards. He found that variation in dewlap colors and patterns, previously used to separate subspecies, were not a reliable sign of underlying genetic differences.
Researchers at USC found that just two sites on the mouse genome control about half of the size variation between bacula, a crucial discovery for understanding bone development and diseases. The study also suggests that only a few genetic tweaks can have an enormous impact on the overall size and shape of the baculum.
Researchers at the University of British Columbia identified a common ancestral gene that enabled the evolution of advanced life over a billion years ago. This gene, found in all complex organisms, encodes for protein kinases that allowed cells to become larger and transfer information more rapidly.
Researchers have developed FlashTag technology to isolate and visualize newborn neurons, revealing the genetic origin of these cells. This discovery sheds light on how brain development occurs and may lead to new treatments for neurodegenerative diseases such as autism and schizophrenia.
Researchers found that hermaphrodite nematodes, which self-fertilize, have significantly shorter lifespans than their female relatives. The study suggests that early reproduction and potential damage from mating may contribute to the decreased lifespan in hermaphrodites.
A new method allows for efficient sequencing of the male-specific Y chromosome in gorillas, showing significant similarity to both human and chimpanzee Y chromosomes. This breakthrough enables researchers to study male infertility disorders and conservation genetics efforts related to endangered species like gorillas.
A new study reveals that genetic variants associated with musical aptitude are linked to ear function, language development, memory, and brain reward mechanism. The findings suggest a common evolutionary origin between music and language.
Researchers discovered a new species of threespine stickleback in Lake Constance that diverges rapidly, even when breeding alongside other populations. This finding challenges traditional speciation theories and highlights the importance of genetic analysis in understanding evolutionary processes.
A new study highlights the potential consequences of reintroducing genetically distinct subspecies into wild populations, particularly in endangered species. Researchers found that hybridization between non-native and local orangutan subspecies can lead to health problems and reduced reproductive success in offspring.
Scientists have developed a new method to analyze the genetic tree of diseases like HIV to identify possible gaps in transmission chains. The study uses computational phylogenetic analysis to examine how strains of HIV are transmitted and can now evaluate the possibility of unsampled intermediaries or common sources.
Researchers analysed genetic variation in extinct Glanville fritillary butterfly populations to understand metapopulation dynamics. The study shows that rapid environmental change can lead to species adaptation through natural selection on dispersal.
Researchers at the University of Tennessee have developed a computational approach to trace the evolutionary history of human genes more precisely. This method will help doctors identify disease-causing mutations and provide more effective treatment options for patients with genetic disorders.
A new study finds that steelhead trout hatchery fish differ from wild fish at the DNA level after one generation of culture. The research identified over 700 genes with changed activity levels, showcasing substantial and rapid genetic changes.
New research from Uppsala University shows that organisms can quickly compensate for the negative effects of synonymous mutations by introducing new mutations. This study provides insights into why these mutations are detrimental to bacterial growth and survival.
A new IU study employs genome-wide sequencing to analyze the evolutionary mechanisms driving genetic divergence in 13 species of wild tomatoes. The research reveals three major genetic strategies behind tomato's ability to adapt to ecological change, including recruitment, introgression, and de novo evolution.
New study confirms Neanderthal DNA has a subtle but significant impact on modern human biology, including associations with skin lesions, nicotine addiction, depression, and blood coagulation. The research uses anonymized electronic health records and genomes to test the effects of archaic genetic variants on clinical traits.
Researchers developed a new method to study genetic differences between long-separated species of yeast, providing insights into how mutations shape growth and behavior. The discovery has implications for understanding age-related diseases and developing new treatments.
A new research technique developed by the Netherlands Institute of Ecology (NIOO-KNAW) enables researchers to identify epigenetic changes in plants and animals much faster and cheaper. This breakthrough can help scientists study climate change, plagues, and other stress-factors more efficiently.
Researchers found that about 170 of the extremophilic fish's genes were turned on to detoxify and remove hydrogen sulfide, a toxic compound in their environment. This discovery opens doors to new insights into evolutionary processes, adaptations, and potential biomedical applications.
A recent study found that corn plants may prioritize defense against caterpillars over aphids, potentially making them more susceptible to aphid attacks. This metabolic trade-off could lead to the development of new corn varieties with naturally increased resistance to certain insects.