Darwin on sexual selection in primates, 19th-century illustration. Here, Darwin is discussing the appearance of four male monkeys: Semnopithecus grey langur (upper left), Ateles spider monkey (lower left) and two Cebus capuchin monkeys (right). Sexual selection is a form of evolutionary and reproductive selection based on differences between the sexes. This is page 307 from chapter 18 (one of two chapters on secondary sexual characteristics of mammals) in volume two of 'The Descent of Man and Selection in Relation to Sex' (1871) by British naturalist Charles Darwin (1809-1882). In volume two of this work ('Sexual Selection'), Darwin wrote on aspects of his evolutionary theory, including sexual selection and natural selection. Darwin's earlier work 'On the Origin of Species' (1859) caused a storm of controversy. By the time of this later work, his theories were more widely accepted. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Library of Congress, Rare Book and Special Collections Division |
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