Articles tagged with Evolutionary Genetics
Researchers found that female birds choose partners based on their genetic compatibility, specifically high MHC gene diversity, rather than physical attractiveness. This study provides the first experimental evidence for MHC-dependent mate preference in birds.
Researchers at the University of Nottingham have discovered a complex genetic mechanism controlling plant germination and flowering. The study reveals genes responsible for stress response are also involved in seed germination, offering insights into adapting crops to extreme environmental conditions.
A 47 million-year-old lizard fossil has provided key findings on the evolutionary relationships between snakes and other reptiles. The study reveals that snakes evolved independently from limbless lizards, rather than sharing a common ancestry with burrowing reptiles.
Sodium channels are a key component of animal nervous systems but evolved prior to their development, according to new research published in PNAS. The discovery suggests that complex traits like the nervous system can evolve gradually from pre-existing genes.
Scientists used simple robots to test how altruism evolves over generations. The results matched Hamilton's rule, suggesting that helping relatives increases their chances of passing on genes. This study has implications for swarm robotics and the evolution of cooperation in nature.
A team of scientists used genetic sequencing and supercomputing to determine that Xyloplax is not a new class of animals but rather a rare example of natural selection shaping its life cycle. The study found that Xyloplax has a truncated life cycle, retaining juvenile features into adulthood.
A recent study published in the American Journal of Human Genetics reveals that mutations in a single gene, centrosomal NDE1, may have played a key role in shaping the human cerebral cortex. The research found that these genetic variations were responsible for microcephaly, a condition characterized by abnormally small brains.
Researchers studied fruit flies adapting from sub-Saharan Africa to Europe and found that a gene called crm regulates temperature-dependent traits. The study reveals that changes in this gene may have enabled the flies to survive in colder climates.
A new study analyzed mutations of the 2009 pandemic influenza A(H1N1) virus in Japan, identifying unique triple combination of bird, swine, and human flu viruses. The research revealed rapid mutation of virus strains with an extremely high evolutionary rate, paving the way for the development of new diagnostic kits.
Researchers analyzed genes from nine bee species, revealing unique genetic changes associated with eusociality in highly and primitively eusocial bees. These findings suggest that the evolution of eusociality is an independent process, shaped by distinct genetic signatures.
Researchers have developed a collection of nearly 800 yeast cell strains to study essential genes, which are crucial for life processes. The new genetic tool allows scientists to investigate the function of these genes at different temperatures.
Researchers harness the power of fast-replicating bacterial viruses to evolve biomolecules in the laboratory, generating enzymes with desired properties in just weeks. The phage-assisted continuous evolution approach allows for rapid generation of proteins and nucleic acids with tailored properties.
Major lineages of flowering plants began to rapidly diversify after reaching a point of development that maximized speciation success. The researchers compiled the largest plant phylogeny to date, involving 55,473 species of angiosperms.
Researchers from Wildlife Conservation Society and AMNH discover genetic distinct populations of Indo-Pacific humpback dolphin formed by currents, surface temperature differences, and environmental barriers. The study sheds light on how environmental factors influence population structure in marine species.
A team of researchers led by Michigan State University's Richard Lenski found that more adaptable bacteria with potential for future improvement prevailed over competitors with short-term advantages. The study shows that sacrificing some benefits now can lead to a winning move later.
A collaborative study between UH and Michigan State University reveals that bacteria evolving quickly can outcompete those that initially grow faster but then become extinct. Understanding these evolutionary dynamics may help design roadblocks to antibiotic resistance.
A new DNA study by University of Gothenburg researchers has uncovered over 120 previously unknown bryozoan species in Swedish waters, including a completely new species. The findings shed light on the evolution and relationships of these nearly invisible animals, which are found in marine and freshwater environments.
Rebeiz aims to understand how regulatory switches change to produce evolutionary novelties, such as the horn on a beetle or the eyespots on a butterfly's wings. His research could apply to human genetics, helping to better understand how genetic alterations lead to disease and deformities.
Scientists discovered that the new plant species Tragopogon miscellus has relaxed gene expression control in its earliest generations, allowing it to rapidly adapt. After 80 years of evolution, different patterns of gene expression are now found in every plant, offering new ideas for agriculture.
A University of Florida study shows that when two flowering plants are crossed, the new species' genes are reset, allowing for greater genetic variation. This process could lead to better growing conditions for more stable and high-yielding agricultural crops.
Casey Dunn, a Brown University biologist, has been awarded the National Science Foundation's Alan T. Waterman Award for his groundbreaking research on the origins of diversity in life. The award recognizes his use of genomic and computational techniques to study complex multicellular organisms, including humans.
Researchers identified 510 missing genetic segments that distinguish humans from chimpanzees and other animals. These segments affect gene regulation, enabling traits like large brains and sensory whiskers. The study reveals how human evolution occurred through subtle DNA changes.
A new study found that larger body size and earlier seasonal timing confer significant survival advantages in most plants and animals. This 'bigger is better' model of evolution is more common than the rare 'Goldilocks' model, where individuals with moderate traits tend to outperform those that are too small or too large.
A new genetic discovery suggests that the loss of function in a human-specific gene called CMAH may contribute to the development of Type 2 diabetes. The study found that mice with this gene mutation developed insulin resistance and pancreatic beta cell failure, leading to decreased insulin production and impaired blood glucose control.
Researchers at Harvard University found a key gene governing color patterns in deer mice, which could explain stripes and spots in diverse vertebrates. The Agouti gene's embryonic activity influences pigment distribution across the body.
Studying homoplasy helps scientists analyze overwhelming genetic data and identify evolution processes. Examples include salamander body length increase through individual vertebrae modification and flower petal evolution on multiple occasions.
A study found that a population of Hudson River fish evolved rapidly in response to PCB pollution, with a single gene responsible for their ability to withstand the toxic chemicals. The study's findings suggest that this genetic adaptation allowed the fish to survive lethal heart defects triggered by PCBs.
A study by Woods Hole Oceanographic Institution reveals that Atlantic tomcod have developed a genetic resistance to PCBs, allowing them to thrive in the polluted Hudson River. The researchers identified a single genetic receptor responsible for this adaptation, which may also impact their ability to break down other harmful chemicals.
Scientists have made progress in understanding the role of p63 in eliminating damaged egg cells before they mature. A study found that a specific form of p63, TAp63a, is activated by DNA damage and triggers cell death.
Research at the University of Michigan suggests that rising carbon dioxide levels associated with global warming may affect interactions between plants and insects, altering the course of plant evolution. The study found that plant families responded differently to elevated carbon dioxide in their production of chemical and physical de...
Researchers at Northwestern University have discovered the first evidence of a human DNA fragment in a bacterial genome, specifically Neisseria gonorrhoeae. This finding offers insight into the bacterium's ability to adapt to its human host and could lead to new strains of the disease.
A new gene-spreading system has been proposed to control mosquito populations without pesticides. The system involves spreading disease-resisting genes in mosquito populations, rendering them infertile or killing females that mate with transgenic males.
A Purdue University scientist discovered genetic evidence of how some plants adapt to live in unfavorable conditions. He found that the Arabidopsis thaliana plants with high sodium levels had a weak form of the gene HTK1, which regulates sodium intake distribution to leaves.
A new study reveals that a subspecies of grey wolf, previously thought to be a golden jackal, is actually a distinct species found in Africa. Genetic evidence confirms that the Egyptian jackal belongs to the grey wolf species complex.
Researchers Joanna Masel and Etienne Rajon found that tiny populations evolve global solutions to prevent errors, while large populations rely on local solutions to tolerate mistakes. This discovery reveals the importance of 'cryptic variation' in natural selection, allowing organisms to adapt to new challenges.
Researchers found that coral larvae with redder fluorescence are less likely to settle into polyps, while greener larvae tend to disperse. This discovery could help monitor corals' adaptation to global warming.
UB's Pop! World uses cloud computing to make evolutionary biology visually appealing, allowing college students to understand complex mathematical concepts. The tool is scalable and adaptable, making it suitable for both undergraduate and secondary school students.
Researchers found that leukemia cells composed of multiple families of genetically distinct cells exist, leading to a re-evaluation of cancer progression and treatment strategies. The study's findings have positive implications for tailoring therapies to individual patients.
Researchers found that men with masculine facial features are more attractive to women during their fertile phase, but this doesn't necessarily translate to increased attraction as life partners. The study, published in Evolution and Human Behavior, suggests that a man's intelligence has no effect on the extent to which fertile female ...
A recent study published in PNAS has confirmed that elephant fish, a shark cousin, share a common genetic process with mammals to form skeletal gill covers. The precise timing of gene expression during embryonic development produces dramatic anatomical differences between the two species.
Wildflowers with distinct colors prevent hybrid offspring from reproducing, ensuring the species remains pure. Researchers have identified a genetic change linked to flower color, demonstrating reinforcement in plants.
A University of Florida study using lice DNA sequencing found that modern humans started wearing clothes around 70,000 years before migrating into colder climates. The research suggests that clothing played a crucial role in human evolution and survival.
Researchers discovered that heat shock protein 90 affects a large portion of the yeast genome, revealing multiple traits simultaneously and instantly. This allows for rapid evolution of interdependent traits, leading to a better adaptation to stressful environments.
A recent study has discovered evidence of a distinct group of 'archaic' humans existing outside Africa over 30,000 years ago. The Denisovans, as they are known, interbred with the ancestors of some modern humans and contributed 4-6% of their genetic material to present-day New Guineans.
A study published in the Journal of Clinical Investigation has found that a brain gene called SOX3 can be activated to trigger male development in mice without a Y chromosome. This discovery has implications for understanding disorders of sexual development and may lead to new treatments.
A team of scientists identified a set of brain proteins that accounts for over 130 brain diseases, including Alzheimer's and Parkinson's. The study provides a new way to study the evolution of the brain and behavior, and opens paths toward tackling these diseases.
A recent study found that nearly 30% of new genes in fruit flies were lethal when silenced, suggesting that new genes are equally important to older genes. The discovery challenges long-held beliefs about the importance of ancient genes and may have implications for human health.
Genetic analysis suggests a single common ancestor triggered the emergence of flowers from pine cone-like structures, with water lilies as potential 'genetic fossils'. This discovery challenges expectations of distinct genetic instructions for each floral organ in early angiosperms.
Genetic comparison reveals Egyptian vulture population in Canary Islands was established around 2500 years ago, matching human colonization date. Human activity led to divergent evolution and demographic expansion of vultures, assisted in their adaptation to new environment.
Researchers challenge traditional views of individuality, proposing an evolutionary perspective that considers the fitness interests of component parts. Meanwhile, a surge in play research reveals its diverse causal mechanisms and evolutionary histories across animal species.
Despite its large genome, powdery mildew has lost many essential genes, limiting its ability to fix nitrogen, harness energy, or produce metabolic products.
Researchers found that marmots' social behavior has a genetic component, with aggression tolerance and friendly interactions heritable traits. The study, led by UCLA biologists, used social network statistics to analyze the behavior of yellow-bellied marmots over six years.
A new study from Tel Aviv University found that symbiotic bacteria inside a fruit fly greatly influence its choice of mates. The researchers isolated the bacterial species responsible for reproductive isolation in flies with diet-related mating preferences.
Researchers discovered that when a person's personality matches the prevalent personalities of others in a culture, it enhances positive effects on self-esteem and well-being. Additionally, social threats induce bodily freeze-like behavior in humans, while cultural differences in spatial representations affect time perception.
A new statistical model reevaluates the timeline of human evolution, suggesting divergence from chimpanzees occurred around 8 million years ago. The revised estimate improves upon previous findings by accounting for gaps in the fossil record and incorporating DNA evidence.
Scientists at the Wellcome Trust Centre for Human Genetics identified a genetic variant influencing left-right hand preference in individuals with dyslexia. The study found a strong link between PCSK6 gene variants and relative hand skill, suggesting a novel genetic basis for handedness.
A new study shows that even when a trait becomes sex-specific, knock-on effects can still disadvantage the other sex. Researchers found that in broad-horned flour beetles, larger mandibles in males were linked to increased mating success but also reduced female reproductive ability.
Researchers at North Carolina State University have discovered that female boa constrictors can reproduce asexually, producing all-female babies with rare genetic traits. The study found that these WW-chromosome females retained their mother's color mutation and lacked any male influence.
A new study reveals that social and genetic effects are both crucial for female dolphins' reproductive success. Female dolphins who have help from their friends and relatives tend to be more successful mothers than those without such support.
A international study published in Nature has cataloged the human DNA mutation repertoire from five populations, including Europe, East Asia, South Asia, West Africa, and the Americas. The study found that approximately 15 million mutations were identified, with only about 50 arising from one generation to the next.