Articles tagged with Heritability
Scientists at McGill University have discovered that histones, previously underappreciated molecules, play a crucial role in transmitting environmental memories over several generations. This finding has the potential to profoundly change our understanding of inheritance and could lead to new avenues for disease prevention and treatment.
A Swedish study estimates the heritability of tic disorders at approximately 77%, suggesting a strong familial component. The study also reveals that risks are higher for full siblings, parents, and children of individuals with Tourette syndrome or chronic tic disorder.
A study published in Current Biology found that people's reactions to repulsive images can forecast their political orientation. The strength of a person's reaction was enough to predict an individual's political ideology with high accuracy. This research suggests that neural responses associated with disgust may be inherited and linke...
Research led by King's College London finds that the high heritability of exam grades reflects many genetically influenced traits such as personality and self-efficacy. The study, which analyzed 13,306 twins, found that individual traits were between 35% and 58% heritable, with intelligence being the most highly heritable.
A landmark study published in Nature finds that spiders adapt their docile-to-aggressive ratios to local environments for optimal colony survival. The research shows that colonies change their composition over time to better match the ratio required by their native site, even when moved to different locations.
A new statistical model predicts the performance of hybrid rice, revolutionizing hybrid breeding in agriculture. The UC Riverside-led research uses genomic prediction to identify high-performance hybrids, increasing grain production and achieving global food security.
A study published in Nature Genetics identified a large number of heritable genes associated with disease risk, providing a new resource for understanding the genetic control of transcription. The researchers analyzed blood sample data from twins and found that heritable genes are more likely to be associated with disease.
A Finnish study found that brown trout exhibit predictable individual differences in behavioral traits such as activity levels and stress tolerance. The research, published in press, reveals that certain behaviors are heritable at a level of 14%, indicating a potential impact on fish populations and fisheries catches.
Scientists discovered that epigenetic marks in plants can affect complex traits such as flowering time and plant architecture. These marks are stably passed on to later generations, opening up new possibilities for plant breeding and evolution.
A recent study published in PLOS Genetics has shed new light on the genetic causes of obsessive-compulsive disorder (OCD) and Tourette syndrome (TS). The research team found that OCD heritability is concentrated in chromosome 15, while TS heritability is spread across multiple chromosomes. The study's findings have significant implicat...
Researchers found that environmental factors played a significant role in shaping the songs and brain structures of zebra finches, with low heritability values for most characteristics except for syllable count and frequency. The study suggests that flexibility in response to environmental conditions helps maintain genetic variation.
A new study has found that bunions and lesser toe deformities are highly inheritable in Caucasian men and women of European descent. The Framingham Foot Study estimated heritability using genetic analyses of familial data, confirming the prevalence of these foot conditions is higher in older adults with a European ancestry.
A study by Princeton University researchers suggests that heritability in humans may not be missing after all, but rather hidden due to limitations in modern research tools. By using yeast cells as a model, the team detected DNA variations associated with traits and characteristics, indicating that most heritability is accounted for.
A twin study found that genes involved in satisfaction and positivity give protection against major depression, with a heritability of 34% for depression and 72% for overall life satisfaction. Environmental factors play a smaller role in protecting against depression than genetic factors.
A recent study found that two-thirds of the variation in avoidant and dependent personality disorder traits can be explained by genes, highlighting the importance of genetic influences in their development. The study's use of both questionnaire and interview measures provided a more comprehensive understanding of heritability.
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.
Researchers have identified DNA variants in two nervous system genes associated with an excessively high BMI, providing new insights into the genetics of obesity. The study used a novel approach to link rare and common regulatory variants to extreme obesity.
Researchers found that people tend to inherit tendencies such as choosing compromise options and avoiding extremes. Additionally, genetic factors seem to play a role in likings for specific products like chocolate, hybrid cars, and science fiction movies.
A new study published in Archives of Otolaryngology – Head and Neck Surgery reveals that the relative importance of genetic factors in tinnitus is low. The research found that environmental factors account for 89% of tinnitus variance, with only 11% attributed to genetic effects.
A study of copy number variations in the genome found no significant link between these changes and common diseases. However, rare genetic variants and epigenetic factors are believed to play a role in disease susceptibility. The research suggests that focusing on other genetic variations may lead to important advances in human health.
A twin study found that face recognition is heritable and influenced by separate genes than general intelligence or IQ. The study's findings support a modularity hypothesis, suggesting specialized brain regions for specific cognitive skills like face recognition.
A new epigenetic model suggests that environmental factors play a significant role in shaping disease risk and heritability. The study provides a theoretical foundation for future public health interventions to reduce genetic risk by limiting or eliminating epigenetic changes.
Researchers propose an operational definition of 'epigenetics' to address confusion in the scientific community. They define it as stably inherited phenotypes resulting from changes in chromatin without altering DNA sequences. The proposed definition highlights three signals involved in establishing a heritable epigenetic state.
Researchers at CAMH have detected evidence that DNA is not the only carrier of heritable information, with epigenetic factors playing a significant role. This finding challenges traditional genetics principles and may provide new insights into human disease causes.
Researchers assessed female participants carrying different types of loads, finding that evenly spread loads are more efficient than awkward ones. This study supports the theory that early hominins carried children to adapt to walking on two legs.
Researchers at Cold Spring Harbor Laboratory have found that spontaneous mutations in DNA are more common in sporadic cases of autism than in familial or healthy children. The study, published in Science, reports that at least 10% of children with autism carry a genetic alteration not found in either parent.
The study found that environmental quality increases the heritability of birth weight, but selection strength weakens in better environments. This suggests that biologically realistic models are crucial for predicting evolution in wild populations.
A Swedish Twin Registry study found that neuroticism is a significant risk factor for anorexia, particularly in women. The disorder is estimated to be 56% heritable, with environmental factors contributing to the remaining percentage.
Researchers found that lipid levels and heart rate variability are 60-80% determined by genetics, with blacks showing a more favorable pattern of heart rate variability. The study provides new insight into the development of cardiovascular disease and may lead to targeted treatment strategies.
Researchers suggest that vibrant egg colours advertise females' ability to defend against deleterious free radicals, indicating genetic quality. This hypothesis can be applied to all animals with colourful eggs and paternal care.