The usage is responsible for the main traffic and takes place between the clients only.
This suggests that differences in one or more cis-regulatory regions (for example, enhancer sequences or splice sites) of mir-92a, rather than changes to the primary structure of this miRNA or differential arm usage, are responsible for naked valley evolution.
Despite a slight skew toward alanine codons that end in adenine (A) or thymine (T) (55.0% GCW, W being the IUPAC ambiguity code for A or T; Additional file 2: Table S5), it is difficult to postulate that selective forces acting at the level of codon usage are responsible for the extensive homogeneity of codon positions found throughout the 612 bp Aar_ AcSp1 repeat.
Whether plants are source or sink limited, that is, whether carbon assimilation or rather assimilate usage is ultimately responsible for crop yield, has been the subject of intense debate over several decades.
To what extent a codon usage bias is responsible for the common gene-vector direction remains an open question.
To the best of our knowledge, no comprehensive study has been performed of the extent to which codon usage bias is responsible for creating a skew on the leading strand.
Overall, our findings support the conclusion that synonymous codon usage bias is responsible for three-base periodicity.
On the down side, my aerosol usage makes me single-handedly responsible for the current dramatic fluctuations in the weather.
Obi Felten is head of consumer marketing for Google EMEA, responsible for growing usage of Google's consumer products such as Google search, Chrome, Maps and mobile through innovative marketing programmes.
Autonomous Systems, by nature, identify an IP address range under the control of a single entity responsible for defining usage policies, routing, and administrative procedures to be applied to all machines installed in that range.
