The Variation of Animals and Plants under Domestication Part Two

Anglický jazyk

The Variation of Animals and Plants under Domestication Part Two

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O knihe

1885. Part Two of Two. Darwin, the British naturalist who became famous for his theories of evolution and natural selection, writes in the introduction: The object of this work is not to describe all the many races of animals which have been domesticated by man, and of the plants which have been cultivated by him; even if I possessed the requisite knowledge, so gigantic an undertaking would be here superfluous. It is my intention to give under the head of each species only such facts as I have been able to collect or observe, showing the amount and nature of the changes which animals and plants have undergone whilst under man's dominion, or which bear on the general principles of variation. Contents: Inheritance Reversion or Atavism; Inheritance Fixedness of Character, Prepotency, Sexual Limitation, Correspondence of Age; On Crossing; Causes which Interfere with the Free Crossing of Varieties, Influence of Domestication on Fertility; On the Good Effects of Crossing and on the Evil Effects of Close Interbreeding; On the Advantages and Disadvantages of Changed Conditions of Life: Sterility from Various Causes; Summary of the Four Last Chapters, with Remarks on Hybridism; Selection by Man; Causes of Variability; Direct and Definite Action of the External Conditions of Life; Laws of Variation, Use and Disuse, etc.; Correlated Variability; Summary; Provisional Hypothesis of Pangenesis; and Concluding Remarks. See other titles by this author available from Kessinger Publishing. Other volumes in this set are ISBN(s): 1417937505.