Genetic Variation Current Events

Genetic Variation Current Events, Genetic Variation News Articles.
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New book from CSHL Press with focus on genetics, personalized medicine and human diversity
'Human Variation,' new from Cold Spring Harbor Laboratory Press, provides a state-of-the-art view of human genetic variation and what we can infer from it, surveying the genetic diversity seen in Africa, Europe, the Americas, and India. The contributors discuss what this can tell us about human history and how it can be used to improve human health. They also caution against assumptions that differences between individuals always stem from our DNA, stressing the importance of nongenetic forces and pointing out the limits of our knowledge. (2014-10-17)

Biologists shed new light on an old question
For nearly 100 years biologists have argued about how exactly natural selection can possibly work. If nature selects the individuals with the best genes then why aren't all organisms the same? What maintains the genetic variation that natural selection acts upon, the genetic variation that has ultimately led to the spectacular diversity of life on Earth today? Recent findings made at Uppsala University suggest that the answer could be sex. (2018-12-12)

The opportunity for canalization and the evolution of genetic networks
Using a combination of mathematical and computational models, Stephen R. Proulx and Patrick C. Phillips investigate the evolution of genetic networks in response to a variety of genetic and environmental perturbations. (2005-02-02)

Hidden genetic variations power evolutionary leaps
So-called 'cryptic' genetic variation plays an important role in evolution, despite having no immediate effect on the behavior or appearance of the organism. (2019-07-25)

A genetic tug-of-war between the sexes begets variation
In species with sexual reproduction, no two individuals are alike and scientists have long struggled to understand why there is so much genetic variation. In a new study published in Nature Ecology & Evolution, a team of researchers from the University of Uppsala in Sweden now show that a genetic tug-of-war between the sexes acts to maintain variation. (2019-11-18)

Is short stature associated with a 'shortage' of genes?
New research sifts through the entire genome of thousands of human subjects to look for genetic variation associated with height. The results of the study, published by Cell Press in the December issue of the American Journal of Human Genetics, suggest that uncommon genetic deletions are associated with short stature. (2011-11-23)

A more accurate understanding of the gorilla genome
Using recent advances in genetic sequencing technology, researchers have significantly improved upon previous assemblies of the gorilla genome. (2016-03-31)

New method for identifying most aggressive childhood cancers
A research group at Lund University in Sweden has found a new way to identify the most malignant tumors in children. The method involves studying genetic 'micro-variation,' rather than the presence of individual mutations. (2015-01-28)

Study: Impact of genetics on human height is not increasing
The relative impact of genetics on height does not increase with improvements to the standard of living. These are the findings of an international research group which analysed the impact of genetic and environmental factors on adult height over a span of more than a century. The research material comprised 40 twin cohorts, including more than 143,000 twin pairs from 20 countries. (2017-01-27)

Color vision variation in guppies influences female mate preference
A variety of animals have male-specific ornament traits and these ornaments are favored by female choice. Which male traits are preferred by females often varies among females. Genetic mechanisms that create and maintain variations in female preference has been one of the central questions in evolutionary ecology. (2018-11-19)

Genetic variation impacts aspirin's effectiveness in preventing colon cancer, Dartmouth study finds
Dartmouth researchers are among a team of doctors that have learned more about how people may or may not benefit from taking aspirin in the effort to curb colon cancer. (2006-10-24)

Genetic tricks of rabbits resistant to fatal viral disease
Underlying genetic variation in the immune systems of rabbits allowed them to rapidly evolve genetic resistance to the myxoma virus, a deadly rabbit pathogen introduced into Europe and Australia during the 1950s, according to a new study. (2019-02-14)

The propagation of admixture-derived evolutionary potential
Adaptive radiation - the rapid evolution of many new species from a single ancestor - is a major focus in evolutionary biology. Adaptive radiations often show remarkable repeatability where lineages have undergone multiple episodes of adaptive radiation in distant places and at various points in time - implying their extraordinary evolutionary potential. (2020-10-07)

Evolution and domestication of seed structure shown to use same genetic mutation
For the first time, scientists have identified a mutation in plants that was selected twice -- during both natural evolution and domestication. The mutation has been identified as the source of variation in the evolution of fruit morphology in Brassica plants and it was also the source of key changes during the domestication of rice. (2011-07-07)

GTEx -- How our fenetic code regulates gene expression
A new study presents the first analysis of the pilot dataset from the Genotype-Tissue Expression (GTEx) project, which investigates how our underlying DNA regulates gene expression. (2015-05-07)

Study suggests link between DNA and marriage satisfaction in newlyweds
New study from a University of Arkansas psychologist suggests a link between DNA and traits beneficial to bonding and satisfaction in first years of marriage. (2021-02-18)

Differences in immune responses create a genetic conflict between sexes
A unique study from Lund University in Sweden has discovered for the first time that there is a genetic sexual conflict in the immune system in animals. In females, the variation in central genes of the immune system is too high, whereas in males, it is too low. The researchers argue that the conflict is linked to differences in the immune responses of females and males. (2018-08-02)

Physical attraction linked to genes that control height, study finds
Our choice of romantic partner can be determined by genetics more than we might expect, a study from the University of Edinburgh suggests. Researchers have discovered that the genes that determine our height also influence why people are attracted to partners of similar heights to themselves. (2016-01-19)

New sequencing tools give up close look at yeast evolution
Using next-generation sequencing, corresponding author Gianni Liti et. al. provide a detailed characterization of the genetic variation present within the baker's yeast species. (2014-01-21)

Expansion of transposable elements offers clue to genetic paradox
A research group led by Professor GUO Yalong from the Institute of Botany of the Chinese Academy of Sciences, together with SONG Ge, and Sureshkumar Balasubramanian from the School of Biological Sciences, Monash University, Australia, has revealed that transposable element insertions could potentially help species with limited genetic variation adapt to novel environments. (2019-03-17)

Genetic variations associated with treatment response for childhood leukemia
Children with acute lymphoblastic leukemia with certain genetic variations can have a different response to anti-cancer treatment than other patients, according to a study in the Jan. 28 issue of JAMA. (2009-01-27)

New discovery: Molecular variation in one gene affects the growth of natural populations
Ecologists have shown that molecular variation in one gene may affect the growth of a population in its natural habitat. Research Professor Ilkka Hanski, University of Helsinki, and Dr Ilik Saccheri, University of Liverpool, discovered that the population growth of the Glanville fritillary butterfly is affected by the allelic composition of the phosphoglucose isomerase (Pgi) enzyme. The result challenges previous views according to which allelic variation in populations, and possible consequent differences in individual performance, would be of no significance for population growth. (2006-04-26)

Genetic link between being tall and being slim, study shows
If you're tall, you're also more likely to be slim, new genetic research has revealed. (2015-09-21)

Stanford biomedical ethicist speaks on role of race in scientific research
Is racial profiling OK in a research setting? Is categorizing groups of people based on genetic characteristics acceptable? These are some of the questions that researchers, led by Mildred Cho, PhD, senior research scholar at the Stanford Center for Biomedical Ethics, will tackle during a symposium at the annual meeting of the American Association for the Advancement of Science in Denver. (2003-02-15)

High genomic variability predicts success in desert tortoise refugees; could inform conservation
Tortoise refugees with the highest genetic variation are far more likely to survive conservation translocation than tortoises whose genetic diversity is lower, according to a new study. (2020-11-26)

Blue-eyed humans have a single, common ancestor
New research shows that people with blue eyes have a single, common ancestor. A team at the University of Copenhagen have tracked down a genetic mutation which took place 6,000-10,000 years ago and is the cause of the eye color of all blue-eyed humans alive on the planet today. (2008-01-30)

Genetic variation may increase risk of liver damage in patients with chronic hepatitis B
A new study has shown that genetic variation may increase the risk of severe liver damage in Caucasians with chronic hepatitis B infection. (2018-07-26)

Modern Melanesians harbor beneficial DNA from archaic hominins
Modern Melanesians harbor beneficial genetic variants that they inherited from archaic Neanderthal and Denisovan hominins, according to a new study. (2019-10-17)

Surprising discovery: Sweet tooth gene connected with less body fat
Last year researchers from the University of Copenhagen discovered that a particular craving for sweet things may be determined by a genetic variation. Now the researchers, in collaboration with an English group, have discovered that people with this genetic disposition for a sweet tooth have less body fat. (2018-04-11)

Women at risk from vitamin A deficiency
A new genetic discovery highlights a potential vitamin A deficiency among UK women. (2009-11-18)

Tall and slim: They go together, genetic study shows
University of Queensland scientists have found a genetic basis for height and body mass differences between European populations. (2015-09-14)

Genes an important factor in urinary incontinence
Much of the risk of developing incontinence before middle age is determined by our genes. Genetic factors can explain half of people's susceptibility to urinary incontinence, a study of twins at the University of Gothenburg and Karolinska Institutet (Sweden) reveals. (2011-04-04)

How our genes and environment influence BMI and height
Environmental conditions influence our body mass index (BMI) by increasing or decreasing the effect of inherited genetic variations, University of Queensland researchers have discovered. (2019-08-22)

Researchers at Maryland play key role in unprecedented effort to analyze human genome
After eight years of analysis, scientists from around the world have completed an unprecedented project to delineate a wide spectrum of human genetic variation. This enormous catalog of data, known as the 1000 Genomes Project, will yield crucial insights for decades. Scientists from the University of Maryland School of Medicine played a key role in this, and co-authored two papers published in the current issue of the journal Nature. (2015-10-01)

Using water fleas, UTA researchers investigate adaptive evolution
Researchers from The University of Texas at Arlington resurrected the preserved eggs of a shrimp-like crustacean to examine long-standing questions about adaptive evolution, reporting the results in the journal Proceedings of the National Academy of Science. (2020-12-11)

Twins study shows how genes shape body weight by affecting gut microbes
Our genetic makeup influences whether we are fat or thin by shaping which types of microbes thrive in our body. By studying pairs of twins, researchers identified a specific bacterial family that is highly heritable and more common in lean individuals. Moreover, a member of this class of bacteria protected against weight gain when transplanted into mice. The findings pave the way for personalized probiotic therapies to reduce the risk of obesity-related diseases. (2014-11-06)

Why do people vote? Genetic variation in political participation
A groundbreaking new study finds that genes significantly affect variation in voter turnout, shedding new light on the reasons why people vote and participate in the political system. (2008-06-26)

New insights into human genetic variation revealed: Nature paper
A powerful new analysis of the protein-coding region of the human genome known as the exome will boost efforts to pinpoint clinically relevant genetic variations linked to human disease. (2016-08-17)

Individuals and populations differ in gene activity levels, not just genes
Much like how a person's genetic code differs from other individuals, the level at which those genes are activated in the body differs from one person to another, scientists have learned. And though some of those differences in gene activity are seen between different populations -- Asians versus Europeans, for instance -- more of those variations are due to individual-level factors, further obscuring the biological meaning of (2007-03-01)

Study reveals value of schizophrenia-related gene variation
University of Iowa researchers have learned more about a genetic variation that is a small risk factor for a mild form of schizophrenia yet also is associated with improved overall survival. (2007-02-13)

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