Evolution: A View from the 21st Century

Most debates about evolution sound like the last fifty years of research in molecular biology had never occurred. Evolution: A View from the 21st Century aims to acquaint the reader with previously "inconceivable" but currently well-documented aspects of cell biology and genomics. This knowledge will prepare the reader for the inevitable surprises in evolutionary science as this new century runs its course. 

The capacity of living organisms to alter their own heredity is undeniable, and our current ideas about evolution have to incorporate this basic fact of life. The genome is no longer the read-only memory (ROM) system subject to accidental changes envisaged by conventional theory. We now understand genomes to be read-write (RW) information storage organelles at all time scales, from the single cell cycle to evolutionary eons. 

The contemporary concept of living organisms as self-modifying beings coincides with the shift in biology from a mechanistic to an information- and systems-based view of vital functions. The life sciences have converged with other disciplines to focus on questions of acquiring, processing and transmitting information to ensure the correct operation of complex adaptive systems.  

Today, we endeavor to understand how new vital capacities arose in the course of evolution during at least 3.5 billion tumultuous years of earth history. Two broad lines of research have made it possible to formulate a new vision of the evolutionary process. One examines how cells regulate the expression, reproduction, transmission and restructuring of their DNA molecules. The other comprises advances in studying interspecific hybridization, symbiogenesis, epigenetics, horizontal DNA transfer and mobile genetic elements. 21st Century evolution science explains abrupt events in the DNA and fossil records. Moreover, this contemporary mode of thinking makes it possible to envisage realistic paths to complex evolutionary innovations.