The book The Principles of Heredity With Some Applications was written by author George Archdall Obrien Reid Here you can read free online of The Principles of Heredity With Some Applications book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Principles of Heredity With Some Applications a good or bad book?
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So considerable has evolution against malaria been in various parts of the world that it is scarcely necessary to bring forward evidence in proof of it. Nothing indeed can be plainer than that different races of mankind differ vastly in their powers of resisting the disease, and that those races that have had extended and disastrous experience of it are much more resistant than those who have had little or no experience of it. Even people who, on doctrinal grounds, strenuously repudiate the ide...a of evolution in general, must admit that in this case evolution has certainly occurred ; for if, as they usually believe, all the races of mankind had a common origin, then in no other way is explicable the differ- ence which now exists between one race and another, not only as regards disease, but also as regards size, shape, colour and so forth for example, between Englishmen and West African Negroes. 220. But while this evolution, when once attention is drawn to it, becomes so manifest that it is unnecessary to waste time in marshalling in proof of it facts that are notorious, we shall nevertheless find it interesting to note how exactly the degree of evolution undergone by any race coincides with the virulence of the disease to which it has been subjected.
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