`Imaging cellular and molecular biological function' provides a unique selection of essays by leading experts, aiming at scientist and student alike who are interested in all aspects of modern imaging, from its application and up-scaling to its development. Indeed the philosophy of this volume is to provide student, researcher, PI, professional or provost the means to enter this applications field with confidence, and to construct the means to answer their own specific questions.
Neutral theory does not deny the occurrence of natural selection. Hughes writes: "Evolutionary biologists typically distinguish two main types of natural selection: , which acts to eliminate deleterious mutations; and , which favors advantageous mutations. Positive selection can, in turn, be further subdivided into , which tends toward fixation of an advantageous allele, and , which maintains a . The neutral theory of molecular evolution predicts that purifying selection is ubiquitous, but that both forms of positive selection are rare, whereas not denying the importance of positive selection in the origin of adaptations." In another essay, Hughes writes: "Purifying selection is the norm in the evolution of protein coding genes. Positive selection is a relative rarity — but of great interest, precisely because it represents a departure from the norm." A more general and more recent view of molecular evolution is presented by .
Write an essay on the central dogma of molecular biology
From the reviews: "Imaging Cellular and Molecular Biological Functions presents essays by experts in the field for scientists and students who are interested in all aspects of imaging, including development and applications." (Spencer L. Shorte and Friedrich Frischknecht, Biophotonics International, April, 2008) "This 450-page, color-illustrated book summarizes the latest technology. It is clearly structured in three sections. ! We can recommend this book to young researchers and imaging specialists ! thanks not only to the numerous illustrations that help clarify the text, but also to the extensive collection of sources relating to each chapter." (Microscopy and Imaging, November, 2008)