Evolution: A View from the 21st Century (FT Press Science) - download pdf or read online

By James A. Shapiro

ISBN-10: 0132780933

ISBN-13: 9780132780933

James A. Shapiro's Evolution: A View from the twenty first Century proposes an immense new paradigm for realizing organic evolution. Shapiro demonstrates why conventional perspectives of evolution are insufficient to give an explanation for the newest proof, and offers a compelling replacement. His details- and systems-based strategy integrates advances in symbiogenesis, epigenetics, and cellular genetic components, and issues towards an rising synthesis of actual, details, and organic sciences.

From the Author:

Most debates approximately evolution sound just like the final fifty years of analysis in molecular biology had by no means happened. Evolution: A View from the twenty first Century goals to acquaint the reader with formerly "inconceivable" yet at present well-documented features of phone biology and genomics. this data will arrange the reader for the inevitable surprises in evolutionary technology as this new century runs its path.

The capability of dwelling organisms to change their very own heredity is indisputable, and our present principles approximately evolution need to contain this easy truth of existence. The genome is not any longer the read-only reminiscence (ROM) method topic to unintentional adjustments envisaged by means of traditional idea. We now comprehend genomes to be read-write (RW) info garage organelles in any respect time scales, from the one cellphone cycle to evolutionary eons.

The modern suggestion of dwelling organisms as self-modifying beings coincides with the shift in biology from a mechanistic to a knowledge- and systems-based view of significant services. The existence sciences have converged with different disciplines to target questions of buying, processing and transmitting details to make sure the proper operation of advanced adaptive structures.

Today, we exercise to appreciate how new important capacities arose during evolution in the course of not less than 3.5 billion tumultuous years of earth heritage. wide traces of analysis have made it attainable to formulate a brand new imaginative and prescient of the evolutionary procedure. One examines how cells keep an eye on the expression, replica, transmission and restructuring in their DNA molecules. the opposite contains advances in learning interspecific hybridization, symbiogenesis, epigenetics, horizontal DNA move and cellular genetic parts. twenty first Century evolution technological know-how explains abrupt occasions within the DNA and fossil files. in addition, this modern mode of pondering makes it attainable to envisage real looking paths to advanced evolutionary innovations.

Additional on-line fabric for this e-book are available at [url]FTPress.com/shapiro[/url] and [url]shapiro.bsd.uchicago.edu/evolution21.shtml[/url].

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Extra info for Evolution: A View from the 21st Century (FT Press Science)

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It refers to a mode of heredity independent of the basic DNA sequence or “genetic” constitution [9] [240, 241]. This idea is useful in understanding multicellular development. It describes how certain groups of cells—say, in a particular tissue or organ—can share inherited characteristics while retaining the same genome as cells with distinct inherited characteristics in a different tissue or organ [242–245]. Besides such theorizing about cell differentiation, several phenomena provided independent evidence for an additional mode of inheritance.

Genome Compaction, Chromatin Formatting, and Epigenetic Regulation For a few decades in the late 20th Century, it was possible to think that transcriptional regulatory circuits are sufficiently complex and sensitive to provide an adequate account of how cells regulate coding 32 Evolution: A View from the 21st Century sequence access [68, 235]. However, two separate lines of thinking and experimentation taught us about additional layers of higher-order control on genome expression. Although originally independent, the two approaches converged at the molecular level in a surprising and satisfying way.

Although our initial assumption is generally that cells die when they receive an irreparable trauma or accumulate an overwhelming burden of defects with age (a process called necrosis), it turns out that a significant (perhaps overwhelming) proportion of cell deaths result from the activation of biochemical routines that bring about an orderly process of cellular disassembly known by the terms programmed cell death and apoptosis (from the Greek, meaning “falling away”) [35] [39, 161, 162]. Apoptosis was first recognized as distinct from trauma-induced necrosis in the 19th Century, but its wider significance was only recognized in the 1960s and 1970s, when studies of development in nematode worms revealed regular patterns of cell death in the course of embryonic morphogenesis.

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Evolution: A View from the 21st Century (FT Press Science) by James A. Shapiro

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