The Descent of Man and Selection in Relation to Sex

Introduction; Part I. On the Descent of Man: 1. The evidence of the descent of man from some lower form; 2. Comparison of the mental powers of man and the lower animals; 3. Comparison of the mental powers of man and the lower animals (continued); 4. On the manner of development of man from some lower form; 5. On the development of the intellectual and moral faculties during primeval and civilised times; 6. On the affinities and genealogy of man; 7. On the races of man; Part II. Sexual Selection: 8. Principles of sexual selection; 9. Secondary sexual characters in the lower classes of the animal kingdom; 10. Secondary sexual characters of insects; 11. Insects (continued)–Order lepidoptera.

Charles Darwin was a naturalist earned fame for the 'Theory of Evolution'. He was born on 12 February 1809 in Shrewsbury England. His father Robert Waring Darwin was a medical doctor and mother Susannah Wedgwood belonged to a famous pottery family. In his childhood he went Shrewsbury School, academically he was not good. For advanced learning, his father send him to Edinburgh University in Scotland to become a doctor but he was not interested and he joined Christ's College Cambridge. His interests developed in botany thus, he studied John Stevens Henslow's course in botany, though he completed his graduation in 1831. As a naturalist Darwin got an opportunity to go to second sea voyage of H.M.S. Beagle to survey the coast of South America. On his voyage he studied plants and animals life. His interests in life science evolved and after working more than 20 years, in 1859 his world fame work 'On the Origin of Species' was published. He explained theory of evolution by natural selection. He said that life on earth evolved from a common ancestors. On earth there is struggle for survival between members who have favourable traits they survive and reproduce, it is known as survival of fittest. Well adapted species survived and less became extinct. Earlier Darwin faced criticism but later he earned honour for the theory. Darwin died on 19 April 1882.

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Darwin's two-volume work on the area of sexual selection across the whole of the animal kingdom.