El origen de las especies (ed. 2)
- Idioma:
- inglés
- Estado:
- Selección u obra parcial
- Autoría:
- Escrita por el autor
- Estado del texto:
- Sin ruido de escaneo detectado (medición automática sobre todo el texto, no revisada a mano)
- Extensión:
- ~170.000 palabras · 804 pasajes
Cita esta obra
- APACharles Darwin. (n.d.). On the Origin of Species by Means of Natural Selection [El origen de las especies (ed. 2)]. Digital reproduction: SigPhi. https://sigphiai.com/es/works/charles-darwin/on-the-origin-of-species-by-means-of-natural-selection
- MLACharles Darwin. On the Origin of Species by Means of Natural Selection [El origen de las especies (ed. 2)]. Digital reproduction, SigPhi, https://sigphiai.com/es/works/charles-darwin/on-the-origin-of-species-by-means-of-natural-selection.
- ChicagoCharles Darwin. On the Origin of Species by Means of Natural Selection [El origen de las especies (ed. 2)]. Digital reproduction, SigPhi. https://sigphiai.com/es/works/charles-darwin/on-the-origin-of-species-by-means-of-natural-selection.
Referencia de la edición que reproduce SigPhi: SigPhi es su reproducción digital, no el editor. El año de la edición no consta en los metadatos (por eso «n.d.») y el traductor solo aparece cuando consta.
De qué trata
Cómo aparecen las especies sin que nadie las diseñe: la selección natural — más descendientes de los que sobreviven, pequeñas variaciones heredables, tiempo inmenso — como mecanismo de toda la diversidad viva.
Contexto e historia
Publicado en noviembre de 1859, y agotado el primer día. Darwin había incubado la idea veinte años, asustado por sus consecuencias, y solo se decidió a publicar cuando Alfred Russel Wallace le envió la misma teoría desde Malasia. Evitó deliberadamente hablar del ser humano — «se proyectará mucha luz sobre el origen del hombre», es todo lo que escribió —, pero todos lo entendieron. Ningún libro de ciencia ha cambiado tanto la manera en que la especie humana se ve a sí misma dentro de la naturaleza, y el debate que abrió aún no se ha cerrado.
Contexto editorial, no una fuente citable: a diferencia de los pasajes de la obra, estos datos no se pueden comprobar contra el corpus.
will almost certainly entail changes in the mature animal. In monstrosities, the correlations between quite distinct parts are very curious; and many instances are given in Isidore Geoffroy St. Hilaire's great work on this subject. Breeders believe that long limbs are almost always accompanied by an elongated head. Some instances of correlation are quite whimsical: thus {12} cats with blue eyes are invariably deaf; colour and constitutional peculiarities go together, of which many remarkable cases could be given amongst animals and plants. From the facts collected by Heusinger, it appears that white sheep and pigs are differently affected from coloured individuals by certain vegetable poisons. Hairless dogs have imperfect teeth: long-haired and coarse-haired animals are apt to have, as is asserted, long or many horns; pigeons with feathered feet have skin between their outer toes; pigeons with short beaks have small feet, and those with long beaks large feet. Hence, if man goes on selecting, and thus augmenting, any peculiarity, he will almost certainly unconsciously modify other parts of the structure, owing to the mysterious laws of the correlation of growth. The result of the various, quite unknown, or dimly seen laws of variation is infinitely complex and diversified. It is well worth while carefully to study the several treatises published on some of our old cultivated plants, as on the hyacinth, potato, even the dahlia, &c.; and it is really surprising to note the endless points in structure and constitution in which the varieties and sub-varieties differ slightly from each other. The whole organisation seems to have become plastic, and tends to depart in some small degree from that of the parental type. Any variation which is not inherited is unimportant for us. But the number and diversity of inheritable deviations of structure, both those of slight and those of considerable physiological importance, is endless. Dr.…