Articles tagged with Evolutionary Developmental Biology
Researchers created a detailed map of the hippocampus's connections to the rest of the brain, finding fewer links with frontal lobes but more with visual networks. This discovery may change how we think about human memory and cognition, potentially shedding light on why some primates excel at certain memory tasks.
Researchers generated induced pluripotent stem cells and cerebral organoids from the last male Malaysian Sumatran rhino, enabling study of brain development and potentially aiding in breeding program. The technology holds promise for fighting extinction of critically endangered species.
Researchers at the University of Tokyo discovered that yeast releases toxins to kill its own clones and surrounding microorganisms when starved of glucose, a phenomenon called latecomer killing. This behavior helps yeast survive mass starvation and aids in the selection of toxin-producing offspring.
Paleontologists at the University of Malaga have found that humans uniquely combine increased brain size with a juvenile cranial shape. The analysis of four new hominid fossils and modern great ape samples shows changes in cranial development, including a negative growth of the neurocranium and a positive growth of the splanchnocranium.
Researchers produced human and chimpanzee brain organoids to investigate the role of ARHGAP11B in brain evolution. The study found that the gene is essential for neocortex development, with its absence or inhibition leading to decreased levels of critical brain stem cells.
Researchers found that corals can pass somatic mutations to their offspring, which increases genetic diversity and provides a potential route for evolutionary adaptation. The discovery challenges conventional wisdom on the role of reproductive cells in evolution.
The winning image depicts a parasitic fungus infecting a fly, while other images showcase the relationships between species, biodiversity under threat, and research in action. The competition highlights the intersection of art and science, celebrating ecologists' creativity to protect the natural world.
A new study by University of Missouri and Webster University scientists finds climate change linked to decline of bumblebees in alpine regions. Warming temperatures are creating a longer growing season, allowing lower-elevation bees to migrate to alpine areas, where they struggle to adapt.
A new study reveals that four living amphibian clades, including the dominant Plethodontidae family of lungless salamanders, develop lungs as embryos but lose them as adults. This finding sheds light on the evolution of lung loss over millions of years and suggests that losing lungs may have enabled their remarkable evolutionary success.
A new study challenges a popular scenario explaining the origin of eukaryotes, suggesting that cells can grow to considerable volume without acquiring mitochondria. Researchers explore energy requirements and genome arrangement in prokaryotes and eukaryotes, revealing overlap between cell types rather than a hard boundary line.
Researchers propose that arthropod shells evolved from a common ancestral structure, contrary to the prevailing gene co-option theory. This discovery suggests that many 'novel' structures in arthropods are actually homologous and share a single origin dating back to the Cambrian period.
Researchers discovered the earliest direct evidence of brood care among insects in the Middle-Late Jurassic Daohugou Biota. Fossils of a water boatman insect showed it carrying a cluster of eggs on its left mesotibia, providing protection from predation and environmental risks.
A new study found evidence that multituberculates, an extinct group of mammals, likely reproduced in a placental-like manner. This discovery questions the long-held idea that marsupials were less advanced than placentals in terms of reproductive strategy.
Researchers found that high temperatures induce epigenetic changes in zebrafish embryos, leading to sex reversal and altering the sex ratio. This study provides insights into the mechanisms behind climate change's impact on species with genotype-by-environment sex determination.
A study published in eLife suggests that combining broadly neutralizing antibodies (bNAbs) based on viral genetics can help prevent viral escape and rebound in HIV treatment. The researchers identified a combination of three bNAbs, PG9, PGT151, and VRC01, which reduces the chance of viral rebound to less than 1%.
A new study reveals that the Hippo signaling pathway is responsible for forming the body axis in Hydra, a process also controlling tissue growth and morphogenesis. This breakthrough discovery sheds light on the evolutionary origins of the body axis in animals.
A new study suggests that voluntary imagination, rather than speech, is crucial for combinatorial language acquisition in children with language deficiencies. The research found that children who engaged in a voluntary imagination intervention showed significant improvement in language comprehension.
Scientists have discovered evidence that yunnanozoans are the oldest known stem vertebrates, with cellular cartilages in the pharynx similar to those found in modern vertebrates. The team's findings support the evolutionary placement of yunnanozoans at the very basal part of the vertebrate tree of life.
Researchers found that socially isolated bumblebees exhibited an increase in affiliative behavior, unlike expected aggression. The brain development of isolated bees showed similarities with group-reared bees, suggesting controlled chaos in the absence of social environment.
A recent study published in PLOS Biology suggests that 'selfish chromosomes' may be the reason behind the high number of human embryo deaths. The research found that most fertilized eggs die early on due to chromosomal errors, and even those that survive may not reach term due to a process called centromeric drive. However, the study a...
Scientists studied embryonic development in fish and cartilaginous fish, revealing that the jaw shares a common developmental origin with the gill. The findings support the theory that the jaw evolved by modification of an ancestral gill, which was previously considered controversial.
A new species of sea anemone has been discovered off the coast of Japan, forming a symbiotic relationship with the hermit crab. The anemone attaches itself to the crab's shell using a hard shell-like secretion, while the crab taps and pinches the anemone to move it to its new shell.
A research team has generated a single-cell atlas for amphioxus, a basal chordate species, providing insights into its developmental program and the origin of vertebrates. The study's findings reveal similar developmental trajectories and regulatory networks in amphioxus and other chordate model organisms.
Research on wild Assamese macaques reveals that their gut bacteria composition changes uniquely with age, despite similar lifestyles. This finding suggests that the process is part of natural aging and not due to lifestyle changes, with potential implications for developing personalized therapies against intestinal diseases.
A new study by the University of Colorado Anschutz Medical Campus explores the effects of multiple mutations in SARS-CoV-2 variants. The findings suggest that certain mutations work together to improve virus fitness, making it challenging for antibody treatments to neutralize new variants.
A new study examines mathematical models designed to draw inferences about how evolution operates at the level of populations of organisms. The researchers conclude that such models must be constructed with care, avoiding unwarranted initial assumptions and weighing existing knowledge.
A new fossil discovery solves the giraffe evolutionary mystery by revealing that long necks evolved as a weapon in male courtship competition. The unique characteristics of the fossil, including its disc-like ossicone and complex joints, suggest an extreme adaptation for high-speed head-to-head impact.
Researchers discovered that ancient retroviruses embedded in human genome can undergo retrotransposition into iPS cells, potentially posing a risk for regenerative medicine. The study found that HERV-K is expressed in SOX2-expressing cells and may cause cancer and neurological diseases by altering gene expression profiles.
Researchers used high-resolution micro-CT scans to reveal key features in Palaeospondylus fossils, placing it as an early ancestor of tetrapods. The study resolves long-standing evolutionary mysteries, including the lack of teeth and dermal bones in the fossil record.
Researchers discovered that moss cells can form mobile spindles during mitosis, moving like animal cells. This unusual process suggests a tug-of-war between microtubules and actin filaments to position the spindle, similar to animal cells.
Researchers at DTU Compute and DIKU have developed a machine learning model that can map the potential of proteins, enabling the biotech industry to accelerate the development of new proteins. The model generates a picture of how proteins are linked, allowing for the identification of closely related proteins with desirable properties.
A study by Kyoto University reveals that crickets' wings form from the lateral tergum of their wingless ancestors. The researchers used gene knockouts and microsurgery to identify key cell types involved in wing formation.
Human activity on Hainan Island is causing changes in the body shapes and diets of tropical birds, resulting in biotic homogenisation. Despite efforts to protect biodiversity, the island's unique ecosystem is being affected by large-scale economic and land-use changes.
A study by Kyoto University researchers reveals that human fetuses develop slower shoulder growth before birth, alleviating complications during delivery. This adaptation allows for a safer passage through the birth canal, reconciling the incompatibility between wide shoulders and narrow pelvis.
Researchers found that human embryos express a vast variety of alternative mRNAs when they are just 8 cells old, leading to a temporary collapse of splicing regulation at the zygotic genome activation stage. This phenomenon is developmentally programmed and occurs because it is necessary for functional reasons, ultimately affecting DNA...
Researchers used X-ray computed microtomography to produce stunning 3D reconstructions of the proteus' head, revealing extensive changes in sensory organs and physical appearance. The study provides detailed information about evolutionary-designed adaptations for surviving in lightless caves.
A developmental gene found in humans is also present in sea anemones and plays a critical role in their ability to sense touch. This discovery sheds light on the ancient evolutionary roots of human hearing and its connection to other sensory modalities.
Research by Universidad Complutense de Madrid found that sea turtles consistently choose the same nesting sites each season, affecting the sex of their offspring. The temperature-dependent sex determination of turtles means males are produced at lower temperatures, and nesting beneath trees may increase male births in warmer temperatures.
A recent study led by the University of Zurich found that well-integrated male dolphins with strong social bonds to many alliance partners produce the most offspring. The researchers analyzed 30 years of behavioral data from 85 male dolphins and used genetic data to conduct paternity analyses for more than 400 dolphins.
A researcher is studying the pufferfish genome to understand its evolutionary history and how it developed distinctive physical traits. The study aims to uncover the underlying genetic mechanisms behind the fish's varying body shapes and extreme sizes.
Researchers discovered a new parasite, Txikispora philomaios, which evolved shortly after the common ancestor of animals and fungi, before its multicellularity was developed. The study provides insights into how animal multicellularity developed through cell communication and specialization.
A new study reveals that butterfly transparency is not only for camouflage but also to signal toxicity. Researchers found that transparent wings can serve both purposes, allowing butterflies to 'cheat' by having the best of both worlds - visibility in sunlight and concealment in shadows.
Researchers used computational modeling and developmental genetic techniques to study grass leaf formation, finding that current theories are likely incorrect and a 19th-century proposal is closer to the truth. The discovery sheds light on how simple growth rules can generate diverse leaf shapes.
A new study published in the journal Anatomical Record reveals that gharial species, native to India, suffer from nasal septal deviation, a condition common among humans. The researchers found that this deviated septum affects the breathing rate and may lead to high shearing stresses along the nasal walls.
A team of UB researchers, led by Cristian Cañestro and Alfonso Ferrández-Roldán, have deciphered a new evolutionary scenario that sheds light on the evolution of our phylum. By studying the gene loss in appendicularian tunicates, they revealed that massive losses of genes eased the transition to a free pelagic lifestyle.
A new study published in Science Advances has shed light on the genetic basis of human appearance features by investigating the role of Hox genes. The researchers replaced the proboscipedia gene in a common laboratory fruit fly with its counterpart from a rarer Hawaiian cousin, revealing that Hox genes function as scaffolds for downstr...
Researchers used CRISPR gene-editing tools to show that a gene controlling bone growth in fish fins plays the same role in forming fingers and toes in four-legged creatures. The study suggests that the last common ancestor between ray- and lobe-finned fish already had the genetic toolkit to shape their appendages.
Researchers discovered that mammals developed protruding, flexible noses from reptilian jaws through cellular studies and fossil analysis. This finding explains the origin of mammals' strong sense of smell and provides potential new animal models for studying facial development disorders like cleft palate.
A new study has identified a transposon promoter that plays a crucial role in the development of mice and may also be essential for human viability. The discovery suggests that ancient viral DNA has been domesticated to regulate key biological processes, such as cell proliferation and embryo implantation.
Several lizard groups evolved teeth with multiple tips, allowing them to transition to plant-based diets and increasing speciation rates. The study also found that tooth evolution was more flexible in lizards and snakes than mammals.
A study of roundworms found that older parents can produce larger, faster-developing offspring with better reproductive success, challenging the notion that old parental age is detrimental. The research showed that older parents invest more nutrients in eggs, resulting in larger offspring.
Researchers have identified a series of genetic switches, called enhancers, that ensure the correct amount and distribution of Gremlin1 protein during embryonic development. This discovery sheds light on the evolutionary history of human limb development and highlights the importance of robust gene networks in shaping our body's form.
A team of researchers discovered that KNOX and BELL transcription factors evolved to activate zygotes in plants, later shifting their role to maintain organ development in land plants. The study used the liverwort Marchantia polymorpha as a model organism.
A study by Johannes Gutenberg University Mainz found that genetically diverse ant colonies produce more larvae than those with similar genetic backgrounds. This improved division of labor allows for more efficient task allocation, leading to better colony performance.
Researchers at the University of Alabama at Birmingham found that SARS-CoV-2 viruses grown in successive generations exhibit increased infectivity, binding to heparan sulfate, and reduced virulence. The study suggests that evolved strains may be used as a basis for development of stable live attenuated vaccines.
A recent study has identified nearly half of the fastest-evolving human genes as playing a crucial role in rewriting the course of human brain development. The research used an innovative approach called CaptureMPRA to analyze the function of Human Accelerated Regions (HARs) in regulating gene expression in the brain.
A Spartan-led team has assembled the most complete picture of the bowfin genome to date, revealing striking similarities between bowfin gas bladder development and human lung development. This breakthrough provides a better model for studying human health and disease, with potential implications for understanding evolutionary history.
Researchers sequenced the bowfin genome to investigate its unique combination of ancestral and advanced features. The study found unexpected insights into diverse aspects of bowfin biology, including the absence of key genes in its pectoral fin.
Researchers reconstructed the oldest known form of roots in a 407-million-year-old plant fossil, revealing a complex branching system that differed from modern plants. This discovery provides insight into the evolution of early land plants and their impact on the environment.
Researchers have discovered that bat pups 'babble' as part of their initial language-learning stage, mirroring human infant babbling. This behavior suggests social feedback is crucial during vocal development in this species, similar to humans.