Sentences with phrase «several gene variations»

There is no single mutation that causes Alzheimer's, says Wild, but we know of several gene variations that increase the risk of the disease.

Not exact matches

«It's sort of the tip of the iceberg,» says Uitterlinden, who led one of four groups that identified several variations in a gene called LIN28B that affect the timing of girls» first period, or menarche.

«Within the context of our emerging appreciation of polygenic risk, where gene variations are implicated in several disorders, the new findings point to only partial overlap in the risk mechanisms for these two forms of bipolar disorder,» said Dr. Krystal.

In all, the study included the data of more than 23,000 people to show that approximately 12 percent of a person's variation in delay discounting can be attributed to genetics — not a single gene, but numerous genetic variants that also influence several other psychiatric and behavioral traits.

In addition to reporting on genetic variation in a gene that is active in fast muscle fibers at The Biology of Genomes meeting, MacArthur wrote several on the spot blog posts covering advances discussed by the participants.

There are several variations of the gene that codes for the receptor for the hormone oxytocin.

The team has identified several ways that naturally occurring gene variations can control both a person's height and their risk of coronary heart disease.

Several lines of evidence suggest that a person's facial shape is controlled by one's genes, but scientists don't yet understand how genetic variation contributes to the range of healthy shapes and sizes that human faces take.

And instead of just several types of brick, it turned out that there were dozens of smaller variations within each type of brick, represented by the many slightly differing copy numbers in the gene.

Variations in several genes have been implicated.

In the course of this work, he has pioneered several new approaches in the fruit fly that have had important implications for mammalian neurobiology, including: the demonstration that the fruit fly has a sleep - like behavior similar to that of mammals, studies of physiological and behavioral consequences of mutations in a neurotransmitter system affecting one of the brain's principal chemical signals, studies making highly localized genetic alterations in the nervous system to alter behavior, and molecular identification of genes causing naturally occurring variation in behavior.

Several candidate gene studies suggest that variations in HLA class 1 and other genes contribute to differences in antibody response to influenza vaccines [15], [69], [70].

However, several genetic mechanisms — including the evolution of protein - coding sequences and gene duplication, as well as the evolution of regulatory sequences — are sources of variation in all species and contribute to organismal adaptation.

Several functions vary among the members of this group of bacteria, such as metabolism of nitrogen, respiration, cell wall and capsule, stress response, secondary metabolite biosynthesis, regulation and cell signaling; this variation in gene functions could help us understand the ability of colonization and adaptability of these rhizosphere - colonizing bacteria.

Several genetic variations were discovered in genes that are suspected to play a role in drug resistance, notably those that code transporter proteins and those implicated in DNA repair.

They identified several causal variations in CCDC115 gene: a homozygous missense mutation, c. 92T > C (p.Leu31Ser) and this one was also compound heterozygous in combination with a heterozygous deletion of CCDC115 (in one family) and a homozygous missense mutation, c. 31G > T (p.Asp11Tyr).

Although the study of psychological genetics is in its infancy and much is still to be learned, in this article, we present data suggesting that variation in several genes known to affect brain function appear to influence the degree to which one is emotionally responsive to the social environment.