Results 261 to 270 of about 3,784,145 (318)

Position effects in Saccharomyces cerevisiae

Journal of Molecular Biology, 1981
Abstract Simple inversion of a DNA fragment simultaneously alters both trp1 and his3 expression in yeast even though the inversion break points map more than 300 base-pairs from either structural gene. In the inverted configuration, a his3 null allele is abnormally expressed and the wild-type trp1 allele is not expressed.
K, Struhl, R W, Davis
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Telomeric position effect in yeast

Trends in Cell Biology, 1992
Telomeres are the physical ends of chromosomes. In yeast, when a gene is placed near a telomere, its transcription is repressed. Genes under the influence of this telomeric position effects switch between a repressed state and a transcriptionally active state, each of which is stable for many cell generations.
L L, Sandell, V A, Zakian
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Single-Sex Education: Positive Effects

Science, 2012
In their Education Forum “The pseudoscience of single-sex schooling” (23 September, p. [1706][1]), D. F. Halpern et al. correctly point out the challenges inherent in assessing the causal effects of single-sex schooling: Because in most contexts, students (or their families) choose ...
Hyunjoon, Park, Jere R, Behrman, Jaesung, Choi   +2 more
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Position effect variegation in yeast

BioEssays, 1994
AbstractClassically, position effect variegation has been studied in Drosophila and results when a euchromatic gene is placed adjacent to either centromeric heterochromatin or to a telomeric domain. In such a circumstance expression of the locus variegates, being active in some cells and silent in others. Over the last few years a comparable phenomenon
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Cancer treatment and survivorship statistics, 2022

Ca-A Cancer Journal for Clinicians, 2022
Kimberly D Miller, Leticia M Nogueira, Angela B Mariotto   +2 more
exaly  

Positive Effect

2021
openaire   +1 more source

Metabolomics in cancer research and emerging applications in clinical oncology

Ca-A Cancer Journal for Clinicians, 2021
Daniel R Schmidt, David G Kirsch, Caroline A Lewis   +2 more
exaly  

The Phenomenon of Position Effect

1950
Publisher Summary The phenomenon of position effect has long been recognized as a fundamental problem in the genetic theory, and one that should throw light on the organization of the chromosomes as well as on the primary reactions of specific genes.
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Positivity Effect

2019
Aprinda Indahlastari, Adam J. Woods
openaire   +1 more source

Radiation therapy‐associated toxicity: Etiology, management, and prevention

Ca-A Cancer Journal for Clinicians, 2021
Kyle Wang
exaly