“The neutral zone of selective advantage in the neighbourhood of zero is thus so narrow that changes in the environment, and in the genetic constitution of species, must cause this zone to be crossed and perhaps recrossed relatively rapidly in the course of evolutionary change, so that many possible gene substitutions may have a fluctuating history of advance and regression before the final balance of selective advantage is determined.”
Quote by Ronald Fisher
Author
Ronald Fisher
Ronald Fisher (February 17, 1890 – July 29, 1962) was a British statistician, geneticist, and evolutionary biologist, regarded as one of the founders of modern statistics. He developed key statistical methods such as analysis of variance, maximum likelihood estimation, and Fisher's exact test, and applied statistical theory to genetics and evolutionary biology, contributing to the modern evolutionary synthesis. Fisher studied mathematics and physics at Cambridge University, later worked at Rothamsted Experimental Station and University College London, and spent his final years in Australia. His work profoundly influenced experimental design, biostatistics, and population genetics, though his support for eugenics remains controversial. more
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