"Darwin believed that the crossing of two types generally led to a blend, and that consequently bisexual reproduction tended to make a species uniform. He therefore had to postulate some cause constantly at work to keep up the inheritable variation within a species. He very naturally looked to the effects of differences of environment. ...It was shown that Darwin had been wrong in supposing that variations due to environment were inheritable. Selection merely picked out the best available line from a given population, and would not, as Darwin had believed, give rise to an unlimited amount of change."
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Science authorsNon-fiction authors from EnglandBiologists from EnglandChemists from EnglandGeneticists
Original Language: English
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Introduction, pp.14-20.
https://en.wikiquote.org/wiki/J._B._S._Haldane
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J. B. S. Haldane
John Burdon Sanderson Haldane (5 November 1892 – 1 December 1964) was a British geneticist and evolutionary biologist.
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