The selection concentrates on soulful arias rather than heroic ones, which makes the ringing bravura outbursts of Alfredo's De' Miei Bollenti Spiriti from La Traviata and the Duke's La Donna e Mobile from Rigoletto the more welcome in contrast.
The British Museum exhibition Manga now, which opened on Thursday, focuses on three makers, and while the majority of manga have texts, this selection concentrates on images alone – perhaps this is wise given that few visitors will read Japanese, and the texts are laden with jargon and in-phrases.
The selection concentrates on two suites of prints commissioned from the artist by Albert Skira, a Swiss publisher, to illustrate special-edition handmade loose-leaf booklets of poems: one set of the works by the 19th-century French Symbolist poet Stéphane Mallarmé; the other by the 16th-century, French Renaissance poet Pierre de Ronsard.
The high frequency of recombination found in the TonB receptor genes highlights how selection concentrates successful recombination events in the regions where they are more needed (in the case of TonB receptors to provide extra transport capabilities).
For instance, in case of the protein structure initiative (PSI), target selection concentrates on representatives from large, structurally uncharacterized protein domain families, and from structurally uncharacterized subfamilies in very large and diverse families with incomplete structural coverage (Dessailly et al., 2009).
Most studies on signal evolution through sexual selection concentrate on the first function: mate attraction.
In particular, the sites identified in zebrafish as subjected to significant diversifying ('positive') selection were concentrated in the variable loop 1, between the β-strands 2 and 3.
However, the X-linked intellectual disability genes inferred to be subject to recent positive selection were concentrated in the Rho GTP-ase pathway, a key signaling pathway in neural development and function.
Our observations are consistent with the interpretation that natural selection has concentrated genes that encode cell surface properties into HVR2, and that this region is subject to unusually rapid rates of sequence divergence and re-arrangements of gene order.
