Sentences with phrase «gene variations with»

Not exact matches

In the case of homosexuality we potentially are talking about randomly occurring variations of a a specific gene that would seem to occur with regularity.

An Israeli research group found that certain variations of the gene made people much more likely to affirm such statements as «I bubble with happiness» and «I am a cheerful optimist.»

In this paper, I tried to interpret evolution as a continually shifting balance, spatially and temporally, among what I called the pressures of mutation, selection, and migration on gene frequencies, in conjunction with the effects of random drift composed of random variations in these pressures and of local accidents of sampling.

This massive dataset is a powerful resource for understanding natural genetic variation in rice as well as for large - scale discovery of new genes associated with economically important traits.

Other research shows that ADHD children with a particular gene variation have thinner tissue in the area of the brain that's associated with attention.

In the current study, Whitney, along with colleagues John Hinson, WSU professor of psychology, and Hans Van Dongen, director of the WSU Sleep and Performance Research Center at WSU Spokane, compared how people with different variations of the DRD2 gene performed on tasks designed to test both their ability to anticipate events and their cognitive flexibility in response to changing circumstances.

Using Atlantic killifish (Fundulus heteroclitus), the researchers examined whether mitochondrial - nuclear interactions alter the frequency of alternative forms of a gene that arise by mutation, called alleles, for over 11,000 nuclear DNA sequence variations within a population of the fish with mixed ancestry.

Sleep - deprived people with two other variations of the gene tend to perform much more poorly on the same kinds of tasks, the researchers found.

Genetic variations most strongly associated with high scores were found near the GATA2 gene — involved in the development of inner ear hair cells and the inferior colliculus.

They made these clones by a process called automatic parthenogenesis: The egg is formed normally (with half the species» usual number of chromosomes), then fertilized by the «polar body,» a cell that is created during oogenesis and contains the same gene copies as the egg, resulting in the shark having half the genetic variation of its mother.

Our genomes are strewn with millions of rare gene variations, the result of the very fast, very recent population growth of the human species.

Although unique genetic variations in children with autism are nearly as rare as they are in the general population, comprehensive studies are starting to find patterns in disrupted genes and pathways

More to the point, your health, your life span — and even some of your actions — may have more to do with the genetic variation in those microorganisms you host than they do with your own genes.

To find other genes associated with these traits, researchers will need to scan the genomes of even more women and look for less common genetic variations, says Kári Stefánsson, CEO of deCODE Genetics in Reykjavik, Iceland.

The team also looked at gene expression before and after exposure and identified 335 genes whose variation in expression correlated with caspase activity.

We have identified hundreds of genetic variations associated with autoimmune diseases that appear to affect the activity of genes in specific regions of the genome, pointing to biological pathways that may be involved in disease and which, ultimately, may be treatable with medication.»

The researchers identified at least five variations whose correlation with a certain disease depended on whether the gene is maternal or paternal.

That is, certain variations in the children's CHRM2 gene appear to interact with parental negligence to produce the most undesirable teenage behavior.

Researchers at Moffitt Cancer Center hope to improve NSCLC patient survival with the results of a study that found that inherited genetic variations in interleukin genes are associated with improved patient survival and response to therapy.

In a new study published in The Quarterly Review of Biology, Dr. Karen Hardy and her team bring together archaeological, anthropological, genetic, physiological and anatomical data to argue that carbohydrate consumption, particularly in the form of starch, was critical for the accelerated expansion of the human brain over the last million years, and coevolved both with copy number variation of the salivary amylase genes and controlled fire use for cooking.

Next, he synthesised 50,000 DNA strands with sequences that almost matched parts of the 24 genes involved in lycopene production, but with a range of variations that he hoped would affect the amount of lycopene produced.

For example, individuals with variations in a gene called FTO tend to desire high - calorie foods more often and have more fat as a result.

Scientists have found a variation of the miR - 182 gene in patients with primary open - angle glaucoma that results in this overexpression, said Dr. Yutao Liu, vision scientist and human geneticist in the Department of Cellular Biology and Anatomy at the Medical College of Georgia at Augusta University.

Not long after the HD gene was isolated, studies led by MacDonald, also a co-author of the current investigation, found that a variation in the number of CAG trinucleotide repeats within the HD gene, which codes for a protein called huntingtin, is the primary determinant of the age at which HD symptoms appear, with a greater number of CAG repeats associated with an earlier symptom onset.

Overall, these twin studies suggest that genes explain between 30 and 60 percent of altruistic tendencies, with the remaining variation coming from cultural or social effects.

Arbuthnott wants to investigate variation in females and what genes are associated with attractive traits.

Individuals who had a particular variation in a specific gene (platelet derived growth factor D; PDGFD) had a markedly increased risk of adrenal suppression, both in the children with asthma and adults with COPD.

Variation in pigmentation among human populations may reflect local adaptation to regional light environments, because dark skin is more photoprotective, whereas pale skin aids the production of vitamin D. Although genes associated with skin pigmentation have been identified in European populations, little is known about the genetic basis of skin pigmentation in Africans.

Researchers looked for regions of each plant's genome that showed unusual patterns of variation consistent with past selective breeding acting on the VRN - D4 gene.

Such high levels of genetic variation poise mosquito populations to rapidly evolve in response to our efforts to control them whether that be with insecticides or any other control measure, including gene drive.»

«Opioid receptor gene variations associated with neonatal abstinence syndrome severity.»

They found men with a specific variation in the well - known TCF4 gene have a higher risk of disease, while women with variations in one of the newly identified genes, LAMC1, have an increased risk.

A new study led by researchers at Boston Medical Center (BMC) indicates that variations in opioid receptor genes are associated with more severe neonatal abstinence syndrome (NAS) in newborn babies.

The international team, led by Professor Jacob George and Doctor Mohammed Eslam at the Westmead Institute, had previously identified that the common genetic variations associated with liver fibrosis were located on chromosome 19 between the IFNL3 and IFNL4 genes.

Previous work had shown that two variations in the COX - 2 gene, with either a guanine (G) or a cytosine (C) molecule at a particular spot in the gene's DNA sequence, lead to different levels of COX - 2 protein.

With the completion of the first phase of the Human Genome Project in 2000, and the advent of sequencing technologies that can detect gene variations such as single nucleotide polymorphisms (SNPs), for the first time scientists have the tools in hand to find the key immune genes and genetic networks that play roles in vaccine response.

Researchers report that one tiny variation in the sequence of a gene may cause some people to be more impaired by traumatic brain injury (TBI) than others with comparable wounds.

People with a specific variation in the CLOCK gene have more migraines under financial stress.

Genes with mammoth - specific changes were most strongly linked to fat metabolism (including brown fat regulation), insulin signaling, skin and hair development (including genes associated with lighter hair color), temperature sensation and circadian clock biology — all of which would have been important for adapting to the extreme cold and dramatic seasonal variations in day length in the ArGenes with mammoth - specific changes were most strongly linked to fat metabolism (including brown fat regulation), insulin signaling, skin and hair development (including genes associated with lighter hair color), temperature sensation and circadian clock biology — all of which would have been important for adapting to the extreme cold and dramatic seasonal variations in day length in the Argenes associated with lighter hair color), temperature sensation and circadian clock biology — all of which would have been important for adapting to the extreme cold and dramatic seasonal variations in day length in the Arctic.

And some women with the variation are spared as well, depending on whether they received the gene from their mothers or their fathers.

To find out how DISC1 acts on synapses, the researchers also compared the activity levels of genes in the healthy neurons to those with the variation.

However, the researchers found that a variation of ECR47 associated with ADHD disrupted ECR47's ability to bind an important neurodevelopmental transcription factor, YY1 — an indication that the risk variant interferes with gene transcription.

Researchers studying two generations of a family affected by pediatric acute lymphoblastic leukemia (ALL) have identified an inherited variation in the ETV6 gene that is associated with an increased risk of developing the disease.

The gene copies also hide natural variation in the wheat genome that could create opportunities to selectively breed plants with useful traits.

Although previous research has identified genes involved with behaviors seen in eating disorders such as anorexia or bulimia, little is known about how natural variation in these genes could affect eating behaviors in healthy people.

Researchers have discovered that protection from the most severe form of malaria is linked with natural variation in human red blood cell genes.

Further analysis revealed that a single - letter change in the gene accounted for 46 per cent of the population's hair colour variation, with the blonde allele being recessive to the dark hair allele.

Patients with a particular inherited variation in the gene IFITM3 were more than twice as likely to develop severe, life - threatening flu symptoms as those who carried the protective version of the gene.

Mutations affecting adult haemoglobin production are among the most common of all genetic variations, with about 5 per cent of the world's population carrying a defective gene.

So geneticists have been focusing on the dog as a possible model for gene searches because this lack of sequence variation may help them circumvent a frequent problem with studies in humans.