Sentence examples for modes of segmentation from inspiring English sources
It illustrates that more segments and more complete restructuring of segments may not be effected, so the modes of segmentation and segment numbers need to be optimized.
Interpretation of positional information from signaling gradients (Aulehla and Pourquié, 2010; Chen et al., 2012; Porcher and Dostatni, 2010; Rogers and Schier, 2011) appears key in this process despite different modes of segmentation in different phyla.
The segmentation gene network produces very robust and conserved output patterns despite fast-evolving upstream inputs through maternal gradients and vastly different modes of segmentation dynamics in different insect taxa (Sander, 1976; Davis and Patel, 2002).
These alternative modes of behavior for the segmentation gene network in one species suggest that the different modes of segmentation observed in different arthropods may evolve rather readily from a largely conserved underlying gene network.
This process is termed short germ or sequential segmentation, to distinguish it from the long germ mode of segmentation seen in Drosophila, where all segments are generated simultaneously by a cascade of genetic interactions taking place in the blastoderm [ 1].
We present a model for how this mixed mode of segmentation is achieved.
Thus, Nasonia relies on a dynamic, dual mode of segmentation that has characteristics of both ancestral short germ and derived long germ embryogenesis.
While the short germ type is believed to be the ancestral mode of segmentation in arthropods (reviewed by Davis and Patel, 2002), the actual molecular mechanisms that regulate it have not been identified.
We propose that Nasonia uses a mixed mode of segmentation wherein pair-rule genes pattern the embryo in a manner resembling Drosophila at the anterior and ancestral Tribolium at the posterior.
Our results suggest that the emergence of the three modes of body segmentation in arthropods is an inherent property of the evolving networks.
Select threshold modes for segmentation of sinusoids in DPPIV and DMs channels.
