The constraints for reorganization of existing cis-regulatory elements, or appearance of such elements de novo, are poorly understood; in some cases, the exact placement of multiple transcription factor motifs is essential for transcriptional function, while the composition of other genetic switches appears to be very loosely organized (Arnosti and Kulkarni, 2005).
After adding Cu powder in the precursor, the appearance of the element Cu demonstrates that Cu is introduced successfully in the as-fabricated samples.
The formation of a core/shell structure is also supported by the appearance of Y3+ element peak in the energy dispersive spectroscopy of these core/shell nanoparticles (Supporting Information, Figure S7).
He writes that "TEs [transposable elements] can have the appearance of selfish elements yet be an inherent part of the mutational mechanisms that serve the evolution of organisms".
Since the time resolution of OFA-SPEC is 1 s, a periodic feature shown in Fig. 17 does not correspond to the appearance of chorus elements.
By means of modifying several Wall properties, such as base constraint, base offset, top constraint, top offset, and thickness, the appearance of Wall elements can resemble smoke curtains and ceiling signboards.
Other studies fail to mention the sequence of ossicle appearance but do describe the appearance of all elements at a particular fish size.
The appearance of the elements of a market in health care delivery was considered to be chaotic.
The appearance of novel elements in multiple contexts suggests that they may represent DNA-binding sites for additional factors that are essential for enhancer function.
The appearance of repeated elements and differential rates of change in the gh1 and gh2 regions is consistent with the hypothesis that a burst of transposition activity occurred during the speciation events which led to Atlantic and Pacific salmon [ 19].
