Articles tagged with Evolutionary Developmental Biology
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.
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.
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 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.
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.
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 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.
An international team found the genetic basis for the seadragon's lack of teeth, leaf-like appendages and sex-determination gene. The research also showed that males care for fertilized eggs until they hatch.
The winning image by Kristen Brown depicts a school of jack fish in a spiral formation, symbolizing the beauty and bounty of oceans as well as the spiralling crisis of coral reef decline. The competition celebrates Earth's biodiversity and its evolutionary origins through six categories.
A new study reconciles the molecular clock with the fossil record of plants by linking older spore-like microfossils to younger plant spores derived from charophyte algae, revealing the evolutionary assembly of the plant regulatory and developmental genome.
Researchers discovered three phases of growth that explain how cetaceans shift their nasal passage from a parallel to an angled orientation. This finding provides insight into the developmental process and could inform our understanding of cetacean evolution.
Researchers have discovered that embryos across various animal groups rely on acoustic signals to inform their development and adapt to environmental conditions. This phenomenon, known as acoustic developmental programming, suggests that sound plays a crucial role in shaping the lives of animals from the moment of birth.
Watanabe's project aims to improve understanding of brain-skull interactions, potentially preventing and treating neurological and cranial birth defects. He will study this topic using birds as a model system and create educational tools, including a virtual reality game.
A new cloud simulation model developed by KAUST researchers captures atmospheric conditions and thermodynamic processes, allowing for more realistic simulation of cloud formation. The model can simulate various cloud types, including cumulonimbus clouds and supercell thunderstorms, with high accuracy.
Ancient fish fossils show that teeth and dermal odontodes, a hard structure similar to teeth, are linked by the same development system. High-resolution X-ray imaging reveals changes in their appearance as they develop, suggesting different chemical signals direct their growth.
A new USC-led study provides evidence that the endoderm also forms part of the pituitary's front lobe in some vertebrates, revising the developmental and evolutionary story of the gland. The research uses cutting-edge technology to label and track embryonic cells, revealing an unexpected contribution from the innermost embryonic layer.
A tiny jaw from Greenland has revealed the earliest known example of dentary bone with two rows of cusps on molars and double-rooted teeth, offering insights into mammal tooth evolution. The discovery suggests that complex occlusion and double-rooted teeth developed together in early mammals.
Researchers analyzed Kalaallitkigun jenkinsi, a late Triassic species from Greenland, to study the origin of double-row cusped molar-like teeth. The findings suggest that these features may have evolved together with biomechanically optimized dual roots.
Münster University researchers develop new software '2-n-way' to compare any genomes, identifying relationships among species or individuals. The tool can analyze genome evolutions, genetic diseases, and sequence any number of genomes.
A new study by Dr. Thomas D. Carr finds that the size and weight of Tyrannosaurus rex do not determine its age, contrary to long-held assumptions. The research reveals a high-resolution growth series for T-Rex, which shows that even small juveniles had powerful skulls and teeth, making them just as deadly as adults.
Researchers mapped developmental milestones in wild chimpanzees, finding gross motor skills emerge at 4 months, while fine motor skills appear at 15 months. The study suggests that extended development is necessary for acquiring adult skills, similar to humans.
Researchers analyzed global shipping fleet movements between 1977 and 2008 to understand how routes evolve. A model based on common neighbor ports and sea distance predicts the likelihood of forming direct links between unlinked ports.
A neuroimaging study found that creative insights trigger a burst of activity in the brain's reward system, motivating further creative activities. Highly reward-sensitive individuals show an additional neural reward response associated with intrinsically rewarding creative experiences.
A new study by an international team of scientists reveals that the Cambrian Explosion was driven by abundant ecological opportunity early in life history. The researchers found that complex features become burdened by their own complexity, limiting evolutionary innovation. This discovery clarifies evolution and development during the ...
Researchers argue that AI can facilitate human interactions in family medicine, making patient care more meaningful. By incorporating informatics into primary care specialties, AI can help reduce administrative burdens and improve population health.
A study on the developmental origins of the frog urostyle reveals that thyroid hormone-mediated ossification played a crucial role in tail loss and rearrangement of the dorsal aorta. This process allowed for evolutionary novelty, shaping the body plan of Anura, including frogs.
Researchers used CRISPR gene editing to study butterfly wing patterns, finding that similar patterns evolved through different genetic pathways despite shared environmental pressures. The study reveals the complex interplay between chance and history in shaping evolutionary outcomes.
A team of evolutionary biologists discovered that atavistic limb muscles, lost in adult humans, are formed during early human development and then disappear. These muscles are present in many limbed animals but are absent in adults. The study uses high-quality 3D images to analyze the development of human arm and leg muscles.
A single DNA variant affects the timing of sensory organ development in fruit flies, explaining size trade-offs between eyes and antennae. The study found a conserved genetic mechanism that could apply to sensory organ size variations across animal kingdoms.
Researchers have identified the genetic basis of pufferfish spines, which share developmental pathways with other vertebrates. The study reveals that the spines evolved as a unique adaptation for protection during inflation.
Researchers study coelacanth specimens at different stages of cranial development, providing new insights into the biology of this iconic animal. The study reveals unique observations about the development of the living coelacanth skull and brain, and opens up new avenues for research on the evolution of vertebrate heads.
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.
Researchers discovered a nearly complete skeleton of the ancient fish Rhizodus hibberti, featuring a novel skeletal pattern in its pelvic fins. The findings suggest that developmental mechanisms were more flexible in early tetrapods, allowing for varied skeletal patterns before the familiar one-to-two limb structure emerged.
A newly discovered Tylosaurus fossil, likely a newborn, lacks the characteristic long snout of the species. Researchers found that the development of this feature occurs extremely quickly, between birth and juvenile stage.
Researchers created flies with ancient genes to understand how mutations drove major evolutionary changes in embryonic development. The study found that two chance mutations were the major causes of a profound change in the animal's developmental processes, resulting in present-day descendants exhibiting new developmental functions.
Researchers found that clown fish stripes are essential for individual recognition and critical to their social organization among sea anemones. They also discovered the evolutionary history of striped patterns, which originated from a common ancestor with three stripes.
A newly discovered mammal fossil contains fossils of 38 babies, providing insight into the evolution of mammals' reproductive strategies. The discovery suggests that a key development in mammalian evolution was trading brood power for brain power.
Researchers found that expanding gene-regulatory modules can give rise to new traits, such as the enlarged snout in African cichlid fishes. The study implicated key genetic pathways, including the Tgfβ-Scx pathway and Adam12 protein.
Researchers used ESMD and BGSA to study temporal and spatial patterns of drought in the Yellow River basin. The results showed that drought frequency varied by season, with summer being the driest, and suggested targeted drought resistance measures for the region.
A recent NIH study discovered that bigger human brains prioritize thinking areas at a cost to emotional, sensory, and motor functions. The larger the brain, the more its additional area is accounted for by growth in thinking areas of the cortex, leading to higher energy consumption.
Fuentes asserts that humans are distinctive, yet share similarities with apes. He proposes that human ability to alter ecosystems is our most distinguishing feature, enabling creative cooperation, technological innovations, and artistic expression.