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El Origen de Las Especies

Autor Charles Darwin Ilustrat de Ruben Fresneda
es Limba Spaniolă Paperback
La teoria de Darwin de la evolucion se basa en hechos clave y e inferencias extraidas de los mismos, que el biologo Ernst Mayr resumio como sigue: Cada especie es suficientemente fertil para que si sobreviven todos los descendientes para reproducir la poblacion crecera. Aunque hay fluctuaciones periodicas, las poblaciones siguen siendo aproximadamente del mismo tamano. Los recursos como los alimentos son limitados y son relativamente estables en el tiempo. Sobreviene una lucha por la supervivencia (inferencia). Los individuos de una poblacion varian considerablemente de unos a otros. Gran parte de esta variacion es heredable. Los individuos menos adecuadas para el medio ambiente tienen menos probabilidades de sobrevivir y menos probabilidades de reproducirse; os individuos mas adaptados al medio ambiente tienen mas probabilidades de sobrevivir y mas posibilidades de reproducirse y de dejar sus rasgos hereditarios a las generaciones futuras, lo que produce el proceso de seleccion natural (inferencia). Este proceso lento resulta en cambios en las poblaciones para adaptarse a sus entornos, y en ultima instancia, estas variaciones se acumulan con el tiempo para formar nuevas especies (inferencia).
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Specificații

ISBN-13: 9781489586469
ISBN-10: 1489586466
Pagini: 118
Dimensiuni: 152 x 229 x 6 mm
Greutate: 0.17 kg
Editura: CREATESPACE

Notă biografică

Charles Robert Darwin, (12 February 1809 - 19 April 1882) was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution. His proposition that all species of life have descended over time from common ancestors is now widely accepted, and considered a foundational concept in science. In a joint publication with Alfred Russel Wallace, he introduced his scientific theory that this branching pattern of evolution resulted from a process that he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding. Darwin's early interest in nature led him to neglect his medical education at the University of Edinburgh; instead, he helped to investigate marine invertebrates. Studies at the University of Cambridge (Christ's College) encouraged his passion for natural science. His five-year voyage on HMS Beagle established him as an eminent geologist whose observations and theories supported Charles Lyell's conception of gradual geological change, and publication of his journal of the voyage made him famous as a popular author. Puzzled by the geographical distribution of wildlife and fossils he collected on the voyage, Darwin began detailed investigations, and in 1838 conceived his theory of natural selection. Although he discussed his ideas with several naturalists, he needed time for extensive research and his geological work had priority. He was writing up his theory in 1858 when Alfred Russel Wallace sent him an essay that described the same idea, prompting immediate joint publication of both of their theories. Darwin's work established evolutionary descent with modification as the dominant scientific explanation of diversification in nature. Darwin has been described as one of the most influential figures in human history, and he was honoured by burial in Westminster Abbey.