Articles tagged with Behavior Genetics
A genetic variant causing shorter eyestalks in male stalk-eyed flies leads to increased aggression, allowing them to compete for mating opportunities despite being less attractive.
Researchers at WashU Medicine used a novel approach to examine the genetic building blocks of risk for mental health problems in teens. The study found associations between genetic predisposition and modifiable risk factors, such as screen time, stressful life events, and environmental conditions like neighborhood crime rates.
The red milkweed beetle's genome has been sequenced, providing insights into how it safely feeds on toxic plants. The study found an apparent expansion of genes related to toxin sequestration and metabolic enzymes.
A recent study by the Wellcome Sanger Institute and GeneDx analyzed nearly 30,000 families with developmental disorders, revealing that known genes explain over 80% of cases caused by recessive genetic variants. The team identified several new genes associated with these conditions, providing answers for previously undiagnosed families...
A DNA study by the University of Edinburgh has identified shared genetic links between dyslexia and attention deficit hyperactivity disorder (ADHD), affecting approximately 10% of the population. The study found that specific genetic regions overlap between the two conditions, with some genes shared between them.
A recent survey conducted by PLOS ONE found that both cats and dogs often enjoy playing fetch with their owners. The study involved a large sample size of pet owners, providing evidence for the universal appeal of this popular dog activity.
A recent study reveals tarantulas have mutually beneficial relationships with various species, including amphibians and army ants. The spiders' dense hair may serve as a defense mechanism against these predators. Tarantulas also employ unique escape strategies and potentially utilize chemical defenses to deter attacks.
A study found that chromatin's spatial structure plays a key role in the evolution of social behavior in dogs. The researchers examined an intronic section of the GTF2I gene, which influences chromatin's spatial structure and causes differences in gene expression.
A study by Florida Atlantic University researchers has identified novel players in dopamine signaling using Caenorhabditis elegans. They found that mutations in the BBSome protein complex, which regulates transport and signaling in cells, can lead to rare genetic disorders like Bardet-Biedl Syndrome.
A new analysis found that people hospitalized for heart disease, stroke, or cardiovascular diseases are 83% more likely to be diagnosed with anxiety, depression, or other psychiatric conditions within the first year after hospitalization. Early mental health screening and intervention are crucial for patients and their loved ones.
Researchers at the University of Birmingham identified specific groups of neurons in the female fly's brain responding to the sex-peptide, which influences post-mating behaviors. The study found that the peptide targets higher-order 'command neurons' essential for behavioral decision-making.
Researchers identified abnormalities in sex determination pathways of intersex mosquitoes, which can help develop strategies to create all-male populations to control mosquito numbers. Understanding these genetic factors also aids in identifying genes affecting female mosquito behavior.
A recent study published in Nature Human Behaviour found that poverty is a causal factor leading to mental health problems, while certain mental health issues can also affect financial stability. The researchers used Mendelian randomization to untangle the relationship between poverty and mental illness.
Researchers will combine patients' self-reports with mobile app, wearable device, genetic sample, and clinical record data to predict which approaches will work best for an individual. The goal is to improve the success of first-time mental health treatment.
A team of researchers uncovered the geographical origins of farmed foxes and understood the role of genetic diversity in their domestication. The study found that every captive population originated from wild North American foxes, with greater genetic diversity observed in Eurasian populations.
The COVICAT study, involving a Spanish cohort of 9,218 individuals, used innovative approaches to analyze the interplay between genetic predispositions and environmental stressors in determining depression risk. Key findings include the importance of considering both genetic and environmental factors when addressing depression risk.
A genome-wide association study found consistent positive genetic associations between coffee consumption and harmful health outcomes in two large datasets. However, the relationship with psychiatric conditions was more complicated, showing both positive and negative correlations across different cohorts. The study highlights the compl...
A recent study reveals that some honeybees exhibit superior learning abilities compared to others, which may be attributed to distinct gene expression patterns in their brains. The research explores the behavioral and genetic underpinnings of individual differences in learning performance among Apis mellifera.
Researchers at Eötvös Loránd University sequenced and characterized the paradise fish genome, revealing a compact genetic material ideal for targeted genome editing experiments. This breakthrough opens up new possibilities for studying evolutionary development and complex behaviors.
Researchers at The Jackson Laboratory have developed new laboratory-grade research mouse strains that better reflect human genetic variation. These wild-derived strains, detailed in PLoS Genetics, introduce millions of novel genetic variants and provide a powerful resource for modeling human traits and diseases.
Researchers have identified over 2000 protein-coding genes that change significantly between summer and winter in the starfish's reproductive process. This study provides a promising breakthrough in understanding how crown-of-thorns starfish communicate during reproduction, which could lead to the development of natural pest control me...
Researchers warn of potential corporate uses of polygenic scores for risk assessment and business profits, highlighting the need for policy safeguards. Current laws and policies are inadequate to address ethical concerns surrounding the use of genetic data.
A study by Dr. Carolin Sommer-Trembo and her team found a strong correlation between exploratory behavior and habitat in African cichlid species. The researchers identified a genetic variant that makes fish more curious, which may have implications for understanding mechanisms of biodiversity and human personality.
Researchers analyzed genomes of 363 bird species and found significant variations in cryptochrome 4 gene, indicating adaptation to environmental conditions. This specialization could be related to magnetoreception in migratory birds.
Researchers found that social status is reflected in epigenetic signatures, including DNA methylation patterns, in juvenile and adult free-ranging spotted hyenas. These patterns are linked to important physiological processes such as energy conversion and immune response.
Nematode worms can learn to avoid harmful bacteria by exposure to bacterial RNA, and pass on this behavior to future generations. This phenomenon, known as transgenerational inheritance, persists for four generations.
Researchers found that genetic variations in THC-metabolizing enzymes can influence how young adults experience cannabis, with slower metabolizers at higher risk for cannabis use disorder. The study suggests educating teens about the differences in cannabis effects could improve their understanding of risk factors.
Research published in JAMA Network Open found that individuals with higher genetic risk of obesity need to walk more steps per day than those with lower risk to avoid becoming obese. Participants with a higher polygenic risk score required significantly more physical activity, with some needing up to 11,020 steps per day.
A recent study by University of Colorado Boulder researchers sheds light on the interactions between genetic variants and their impact on smoking behaviors. The study found that certain gene variants can interact with each other and with Mr. Big, a widely replicated genetic variant associated with smoking behaviors.
A new study found that a 'courtship' gene has different effects in two fruit fly species. In one species, giving females the gene resulted in them adopting male behaviors, while in another, it enabled them to produce both male and female songs. The findings suggest that genes can have varying functions across different species.
Female whales of certain species experience menopause, living up to 40 years longer than their peers by prioritizing family care over breeding. This unique trait allows them to support their offspring and grandchildren without overlap with their daughters' reproductive cycles.
Male roundworms use diverse chemical and physical signals to determine the sex, age, nutritional health, and mating history of potential mates. They prefer hermaphrodites that have not previously mated with another male and are nutritionally healthy.
Research by Max Planck Institute for Evolutionary Anthropology and Duke University found that early life adversity, such as drought and poor habitat quality, can leave lasting signatures in baboon DNA. Multiple exposures to early adversity appear to have compounding effects on DNA methylation.
The study of ancient genomes has shed light on the evolution of modern humans, revealing genetic changes that distinguish us from Neanderthals and Denisovans. These findings suggest that population-level advantages, such as increased connectivity and access to resources, played a significant role in shaping human migration patterns.
Scientists have identified the 'gene of prejudice' GTF2I as crucial in regulating social behavior. The gene's deletion or duplication leads to variations in personality, with individuals having either a 'cocktail party personality' or autistic traits. This research may lead to new treatments for autism and shed light on human sociality.
Scientists at UCSF discovered a new way to test for autism by measuring how children's eyes move when they turn their heads. Children with severe autism have an unusual form of the vestibulo-ocular reflex, which can be measured with a simple eye-tracking device.
A new perspective article suggests that integrating environmental effects into genetic research is crucial to understand the intricate nature of gene-environment interactions. The authors propose expanding genome-wide association studies by incorporating environmental data, which could help mitigate deterministic thinking in genetics.
A Cornell University study found that female lab mice behave differently from their male counterparts when placed in large outdoor enclosures. Unlike males, females often avoid each other and do not form hierarchical structures, instead interacting randomly with other females.
Parents who received nutritional epigenetics education reduced ultra-processed food consumption and increased whole organic foods intake, leading to improved behavior and cognition in their children. The education intervention also reduced heavy metal exposures and dietary deficits that disrupt gene function.
A Northwestern University study found epigenetic changes in Alzheimer's patients' blood that increase the risk of the disease. The researchers discovered altered immune genes and proteins in the blood that could be triggered by previous viral infections or environmental pollutants, potentially leading to brain damage.
A research team has discovered a novel mechanism by which stress affects the brain, revealing a potential new pathway for treating depression. Stress increases the production of MMP-8, an enzyme that alters neuron function and leads to behavioral changes.
A study in rats found that excessive adolescent stress alters genes associated with energy metabolism, leading to behavioral problems and psychiatric disorders in adulthood. The prefrontal cortex's response to stress was also affected, suggesting a link between mitochondrial function and emotional regulation.
A global study has identified over 200 genes linked to depression, including 50 new genetic loci and 205 novel genes. The research also suggests potential for drug repurposing and highlights the need for more diverse genetic datasets to develop effective treatments.
Researchers found that mutations in IDO2 can affect dopamine release and lead to ASD-like behaviors. IDO2 KO mice exhibited changes in microglia populations, which may contribute to synaptic abnormalities.
Researchers have successfully converted human retinal cells, specifically Muller glia, into neurons in a lab setting using an artificial fish-like genetic program. This breakthrough could potentially serve as a new source of neurons to treat vision loss caused by disease or trauma.
A recent study published in Nature Communications has identified a key brain molecule responsible for triggering overconsumption of comfort foods after stressful events. The lateral hypothalamic proenkephalin neuron plays a crucial role in driving threat-induced eating associated with negative emotional states.
The review highlights Brazil's importance in global sustainability efforts, with the country having twice as many articles on sugarcane as the US. Genetic engineering techniques need improvement to increase ethanol production while minimizing crop expansion. CRISPR-Cas9 gene editing is a promising approach for precise modifications.
Jenny Wilkerson receives $1.94 million grant to develop novel models and investigate antinociceptive profiles of basal sex hormone alterations in patients with chronic post-op pain. The study aims to answer questions about the impact of altered sex hormone levels on recovery times, drug effectiveness, and long-term health.
Researchers have identified a gene called LHPP that interacts with stress to mediate aspects of treatment-resistant MDD in an animal model. Increased expression of LHPP aggravated depression-like behaviors by dephosphorylating two protein kinases, CaMKIIα and ERK.
The study has shed light on how cats evolved into different species and how genetic changes relate to survival abilities like smell detection. It also revealed that cat genomes tend to have fewer complex genetic variations than other mammal groups, such as primates.
Researchers found changes in microglial cells, a specialized subset of immune cells, that may worsen schizophrenia risk in adolescents. The study, published in Nature Communications, suggests that THC exposure during adolescence can lead to long-lasting negative effects on brain development and function.
A new study identifies Magel2, a novel imprinted gene, as crucial for regulating nesting behavior and parental care in mice. The study found that mice lacking active Magel2 are inattentive parents with poor nests.
A large-scale genetic study has identified 12 DNA variants associated with an increased risk of attempting suicide. The research highlights links between genetic factors and health conditions such as impulsivity, smoking, chronic pain, and heart disease.
Researchers discovered protein p53's role in regulating sociability, repetitive behavior, and hippocampus-related learning and memory in mice. Lowering p53 levels led to changes in gene expressions related to behavior, while elevated p53 levels were linked to positive learning outcomes.
Research identifies genetic overlap between schizophrenia and cardiovascular disease (CVD) risk factors, particularly smoking initiation and BMI. The study found that people with schizophrenia have a genetic propensity to smoking and a reduced genetic risk of obesity.
A study found that flat-faced breeds like English and French bulldogs rely more heavily on humans during problem-solving tasks, leading to lower task success rates. This trait may contribute to the strong social bond between owners and these breeds, but the study's findings do not confirm a genetic predisposition.
Repeated traumatic brain injury contributes to Alzheimer's disease by promoting de novo tau pathogenesis and facilitating pathological tau transmission in mouse models. Axonal microtubule disruption is a key molecular mechanism underlying rTBI-induced protein pathogenesis.
A large study found that people with an evening chronotype were more likely to engage in unhealthy lifestyle behaviors such as smoking, poor sleep, and physical inactivity. These individuals had a 72% higher risk of developing diabetes compared to those with a morning chronotype.
Researchers discovered that the blood-brain barrier in carpenter ants produces a hormone-degrading enzyme, Juvenile hormone esterase (Jhe), which controls JH3 hormone levels in the brain, affecting behavior. Manipulating Jhe levels can reprogram ant castes and even change food-seeking behavior in fruit flies.
Sahmyook University researchers discovered a correlation between methamphetamine-induced behavior and the expression of specific genes in mice models lacking Period 2 gene. They identified 19 genes that were activated only in response to repeated doses of methamphetamine.