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  1. Dictionary
    species
    /ˈspiːʃɪz/

    noun

    • 1. a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. The species is the principal natural taxonomic unit, ranking below a genus and denoted by a Latin binomial, e.g. Homo sapiens.
    • 2. a kind or sort: "a species of invective at once tough and suave"

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  3. On the Origin of Species (or, more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) is a work of scientific literature by Charles Darwin that is considered to be the foundation of evolutionary biology.

    • Charles Darwin
    • 1859
  4. May 29, 2024 · Darwin hastily began an “abstract” of Natural Selection, which grew into a more-accessible book, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life.

  5. More than a decade after his 'Origin of Species', Darwin found courage to publish ideas he had once only hinted at. In 'The Descent of Man' he presented an unequivocal account of human...

    • VARIATION UNDER DOMESTICATION. Causes of Variability. Effects of Habit. Correlation of Growth. Inheritance. Character of Domestic Varieties. Difficulty of distinguishing between Varieties and Species.
    • VARIATION UNDER NATURE. Variability. Individual differences. Doubtful species. Wide ranging, much diffused, and common species vary most. Species of the larger genera in any country vary more than the species of the smaller genera.
    • STRUGGLE FOR EXISTENCE. Bears on natural selection. The term used in a wide sense. Geometrical powers of increase. Rapid increase of naturalised animals and plants.
    • NATURAL SELECTION. Natural Selection: its power compared with man’s selection, its power on characters of trifling importance, its power at all ages and on both sexes.
  6. Charles Darwin’s Origin of Species led Jeffrey to interpret the form and structure of plants historically and to use comparative morphology and anatomy to provide evidence of specific evolutions. In 1899 Jeffrey reclassified all vascular plants into Lycopsida and Pteropsida; while later classifications have refined plant groupings,…

    • Origin of the Species1
    • Origin of the Species2
    • Origin of the Species3
    • Origin of the Species4
    • Origin of the Species5
  7. The origin of species by means of natural selection, or the preservation of favoured races in the struggle for life. London: Murray. 6th ed. [Introduction by G. Chancellor] Text Image PDF F391 1876.

  8. The genesis of Charles Darwin's book On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life (1859) is well known, and the changes that it underwent in subsequent editions are well documented.

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