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are removed. To neutralists (neutral theory), most mutations are adaptively neutral, and therefore become fixed in the population because their presence posses no harm; extensive variation is the results. The neutral theory does not deny the role of natural selection as Motoo Kimura stated in 1986. Michael Lynch, in his new book, cited that Kimura became the most prominent defender of the neutral theory—which would be his main focus for the rest of his career. With Ohta, he refocused his arguments on the rate at which drift could fix new mutations in finite populations, the significance of constant protein evolution rates, and the functional constraints on protein evolution that biochemists and molecular biologists had prevailing evolutionary theory in the 1950s. One of the key tenets of neo-Darwinism is that natural selection is the primary force driving evolutionary changes. This tenet was seriously challenged by the neutral theory of molecular evolution (Kimura 1983), the only conceptual revolution in evolutionary biology in the last 50 years (Zhang 2010 this time was the merging of classical population genetics with molecular evolution (Kimura, 1969; Ohta and Kimura, 1971), to produce the theory of neutral evolution (Kimura, 1983) and the constancy of the evolutionary rate of proteins (Jukes and Holmquist, 1972), also known as the molecular clock hypothesis (Kimura and Ohta, 1974). Another area of intensifying research was the string Here, Kimura's fundamental concept of neutral mutation-random drift, which was published 50 years ago, is re-examined in light of its pervasive influence on comparative genomics and, more specifically, on the contribution of transposable elements to eukaryotic genome evolution. Leitner, T. (2018) The Puzzle of HIV Neutral and Selective Evolution. on regional scales. A lack of previous attempts to combine both regional and local scale predictions has prevented a proper validation of fundamental predictions of neutral the-ory. Recently, a spatially explicit analytical approach revealed severe scaling issues of neutral theory predictions (O'Dwyer & Cornell 2018). Here it was shown that Neutral theory has its roots in population genetics (see Box 1), which also relies on the notion of randomly generated diversity. In ecology, two mechanisms regulating diversity have come to the fore. First, Hubbell showed empirically that dispersion (i.e., the spatial distribution of plants and other Beyond Neutrality—Ecology Finds Its Niche Two principally different mechanisms are proposed as primary drivers of eukaryotic genome size evolution: whole-genome duplication (WGD, i.e., polyploidy) or smaller duplication events and The Neutral Theory of Molecular Evolution • Motoo Kimura advanced the Neutral Theory of Molecular Evolution in 1968. Two observations underlie the theory • 1. Most natural populations harbor high levels of genetic variation higher than would be expected if natural selection were the evolutionary force primarily responsible for influencing the level of genetic variation in populations • 2 Springer Nature This book, written by Motoo