position effect


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position effect

n.
Variation in the expression of a gene resulting from changes in its location within a chromosome or genome.

position effect

n
(Genetics) the effect on the phenotype of interacting genes when their relative positions on the chromosome are altered, as by inversion
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.position effect - (genetics) the effect on the expression of a gene that is produced by changing its location in a chromosome
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
consequence, effect, result, upshot, outcome, event, issue - a phenomenon that follows and is caused by some previous phenomenon; "the magnetic effect was greater when the rod was lengthwise"; "his decision had depressing consequences for business"; "he acted very wise after the event"
Translations
effet de position
References in periodicals archive ?
Thus, the abnormal phenotypes are the consequences of the gene disruption, position effect or deletion at one of the break points resulting in haploinsufficiency of critical X linked genes.
POSITION EFFECT (PE): The tendency of scores in a test of psi to vary systematically according to the location of the trial on the record sheet.
The serial position effect is the phenomenon in which faster learning and greater recall of items occur at the beginning (primacy effect) and end (recency effect) in comparison to items at the middle of a list.
Based on the information available we propose that in our case the chromosomal rearrangement could have separated the promoter from a distant regulatory element, or might have juxtaposed a gene with a regulatory element from another gene, or brought a gene and its regulatory element close to another gene generating competition for the regulatory element between the two genes, and finally, the rearrangement could have given rise to a position effect variegation (PEV) (14,15).
gene silencing, paramutation, genomic imprinting, position effect, etc.
In other words, if financial integration has a position effect on growth, there is as yet no clear and robust empirical proof that the effect is quantitatively significant", the report said.
Given its robust nature, the serial position effect is a great in-class demonstration, and results provide an opportunity to apply the classic "stages of processing" theory of human memory.
As previous research has found (Quible, 1991: DiSalvo and Larsen, 1987; and Smeltzer and Gebert, 1986), we found a significant position effect for both job performance and advancement and a significant effect of company type for job advancement.
After a historical treatise on the field, the general attributes and telomeres and telomerases and the relation of telomere biology to human health are discussed in chapters on the telomerase ribonucleoprotein particle, telomerase biochemistry and biogenesis, telomerase and human cancer, modeling cancer and aging in the telomerase-deficient mouse, telomerase deficiency and human disease, telomerase-independent maintenance of mammalian telomeres, telomerase-independent telomere maintenance in yeas, meiotic telomeres, telomere position effect, and telomere structural biology.
Pascual Perez, Biogemma's Research Coordinator, "The technology is designed to allow the introduction of genes in plants in a targeted area of the genome, which can significantly improve the speed at which modified plants can be developed, minimizing the transformation position effect, and thereby simplifying the regulatory process.
A 5' element of the chicken beta-globin domain serves as an insulator in human erythroid cells and protects against position effect in Drosophila.