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Excerpt from Controlled Natural Selection and Value Marking
This small volume makes public a new Theory. At the outset it is most important to make clear that no attempt is made to prove the Theory. For this reason it would have been better perhaps to have called it a New Hypothesis. Nevertheless, although proof is not attempted, the numerous ex amples mentioned for purposes of illustration are, in themselves, facts which the Theory correlates, and therefore to some extent put the Theory to test.
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Controlled Natural Selection and Value Marking (Classic Reprint)
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Paperback. Condizione: New. Print on Demand. This book challenges Darwin's theory of sexual selection, arguing instead that the origin of secondary sexual characteristics arises from natural selection acting upon associations of individuals, such as pairs and families. These characteristics control natural selection in a way that makes less valuable individuals, such as males and the old, more liable to destruction than the more valuable, such as females and the young. Drawing on a variety of evidence, including conspicuousness in nature, the author presents a new theory of controlled natural selection and value marking, whereby differences in value are associated with differences in structure. This theory helps explain the origin and use of polymorphisms and provides a new perspective on the evolution of sexual dimorphism and other di- and poly-morphisms. This book will be of interest to evolutionary biologists, ornithologists, and anyone interested in the origin and evolution of animal characteristics. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781332221257_0
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Controlled Natural Selection and Value Marking Classic Reprint
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Controlled Natural Selection and Value Marking Classic Reprint
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781332221257
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Controlled Natural Selection and Value Marking (Classic Reprint)
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Condizione: Hervorragend. Zustand: Hervorragend | Sprache: Englisch | Produktart: Bücher. Codice articolo 26063638/1
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