Lipton and Thompson (1988) attempt a more spirited defense of natural selection against charges of circularity by arguing that natural selection explanations are recursive rather than circular and are a type of filter explanation.
It was all something of a retooling for Mr. Cheney, the former secretary of defense, whose selection in July brought the word "gravitas" back into vogue.
Ms. Resnick pointed out that in the first round of selection, the defense had moved to strike 7 of the 10 Jews but only one of the 30 African-Americans.
Collectively, the literature on population genetic analysis of evolutionary patterns at host resistance genes indicates that the dominant form of selection acting on defense genes differs among different components of defense mechanisms [7].
Consequently, coloration in these species may be a consequence of selection for chemical defense.
In the case of piRNA, like with the CRISPR-Cas, fragments of mobile element genomes are integrated into the host genome where they rapidly proliferate, apparently, under the pressure of selection for effective defense [ 48].
Thus, weather factors identified in this study as being important predictors of fungal abundance and diversity in general, may also shed light on the distribution of fungal pathogens and the extent of selection on plant defenses.
These matters include significant litigation, the defense of congressional investigations, the judicial selection and nomination process, government ethics, and clemency.
We used individual Arabidopsis gene expression profiles obtained in the first round of selection to evaluate similarity between defense-related gene sets of corresponding species.
This is contrasting with the pattern of selection observed in vertebrates, in which genes involved in defense mechanisms are under balancing selection in addition to directional selection.
Accordingly, the PhAT naturally lends itself to defense of biologically effective dose as an alternative to dose selection based upon maximally tolerated dose.
