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Cap analysis of gene expression (CAGE) is a gene expression technique used in molecular biology to produce a snapshot of the 5′ end of the messenger RNA population in a biological sample (the transcriptome).
The tag frequency can be used to report on transcription of the gene that the tag came from. [ 1 ] Serial Analysis of Gene Expression ( SAGE ) is a transcriptomic technique used by molecular biologists to produce a snapshot of the messenger RNA population in a sample of interest in the form of small tags that correspond to fragments of those ...
In chemistry, the cage effect [1] (also known as geminate recombination [2]) describes how the properties of a molecule are affected by its surroundings. First introduced by James Franck and Eugene Rabinowitch [ 3 ] [ 4 ] in 1934, the cage effect suggests that instead of acting as an individual particle, molecules in solvent are more accurately ...
amoeboid movement, a crawling-like movement, which also makes swimming possible [17] [18] filopodia , enabling movement of the axonal growth cone [ 19 ] flagellar motility , a swimming-like motion (observed for example in spermatozoa , propelled by the regular beat of their flagellum , or the E. coli bacterium, which swims by rotating a helical ...
Also called functionalism. The Darwinian view that many or most physiological and behavioral traits of organisms are adaptations that have evolved for specific functions or for specific reasons (as opposed to being byproducts of the evolution of other traits, consequences of biological constraints, or the result of random variation). adaptive radiation The simultaneous or near-simultaneous ...
Kinesis, like a taxis or tropism, is a movement or activity of a cell or an organism in response to a stimulus (such as gas exposure, light intensity or ambient temperature). Unlike taxis, the response to the stimulus provided is non-directional.
The set of observed movement sequences includes planar undulatory waves and traveling helical waves, either from the base to the tip, or in the opposite direction. [ 19 ] [ 20 ] Flagella attached to the same body might follow different beating patterns, leading to a complex locomotion strategy that often relies also on the resistance the cell ...
Phototaxis is a kind of taxis, or locomotory movement, that occurs when a whole organism moves towards or away from a stimulus of light. [2] This is advantageous for phototrophic organisms as they can orient themselves most efficiently to receive light for photosynthesis. Phototaxis is called positive if the movement is in the direction of ...