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La forma seleccionada tiene ventaja, dice el autor. Seguramente. Esto se aplica igual a individuos, familias, clanes, poblaciones, variedades y especies y por lo tanto las ideas del autor no sirven para explicar el Origen de las Especies.<\/p>\n
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\u00a0<\/em><\/p>\n \u00a0<\/em><\/p>\n 175.<\/em><\/p>\n But during the process of modification, represented in the diagram, another of our principles, namely that of extinction, will have played an important part. As in each fully stocked country natural selection necessarily acts by the selected form having some advantage in the struggle for life over other forms, there will be a constant tendency in the improved descendants of any one species to supplant and exterminate in each stage of descent their predecessors and their original progenitor. For it should be remembered that the competition will generally be most severe between those forms which are most nearly related to each other in habits, constitution and structure. Hence all the intermediate forms between the earlier and later states, that is between the less and more improved states of a the same species, as well as the original parent-species itself, will generally tend to become extinct. So it probably will be with many whole collateral lines of descent, which will be conquered by later and improved lines. If, however, the modified offspring of a species get into some distinct country, or become quickly adapted to some quite new station, in which offspring and progenitor do not come into competition, both may continue to exist.<\/em><\/p>\n \u00a0<\/em><\/p>\n Pero durante el proceso de modificaci\u00f3n representado en el cuadro, otro de nuestros principios, el de la extinci\u00f3n, habr\u00e1 representado un papel importante. Como en cada pa\u00eds completamente poblado la selecci\u00f3n natural necesariamente obra porque la forma seleccionada tiene alguna ventaja en la lucha por la vida sobre otras formas, habr\u00e1 una tendencia constante en los descendientes perfeccionados de una especie cualquiera a suplantar y exterminar en cada generaci\u00f3n a sus precursores y a su tronco primitivo. Para esto hay que recordar que la lucha ser\u00e1, en general, m\u00e1s rigurosa entre las formas que est\u00e9n m\u00e1s relacionadas entre s\u00ed en costumbres, constituci\u00f3n y estructura. De aqu\u00ed que todas las formas intermedias entre el estado primitivo y los m\u00e1s recientes, esto es, entre los estados menos perfeccionados y los m\u00e1s perfeccionados de la misma especie, as\u00ed como tambi\u00e9n la especie madre primitiva misma, tender\u00e1n, en general, a extinguirse. As\u00ed ocurrir\u00e1 probablemente con muchas ramas colaterales, que ser\u00e1n vencidas por ramas m\u00e1s modernas mejoradas. Sin embargo, si los descendientes mejorados de una especie penetran en un pa\u00eds distinto o se adaptan r\u00e1pidamente a una estaci\u00f3n nueva por completo, en la cual la descendencia y el tipo primitivo no entren en competencia, pueden ambos continuar viviendo.<\/em><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" La forma seleccionada tiene ventaja, dice el autor. Seguramente. Esto se aplica igual a individuos, familias, clanes, poblaciones, variedades y especies y por lo tanto las ideas del autor no sirven para explicar el Origen de las Especies. \u00a0 \u00a0 175. But during the process of modification, represented in the diagram, another of our principles, namely that of extinction, will have played an important part. As in each fully stocked country natural selection necessarily acts by the selected form having some advantage in the struggle for life over other forms, there will be a constant tendency in the\u2026<\/p>\n","protected":false},"author":86,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[467,14321],"tags":[],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":4}},"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts\/135224"}],"collection":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/users\/86"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/comments?post=135224"}],"version-history":[{"count":3,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts\/135224\/revisions"}],"predecessor-version":[{"id":136713,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/posts\/135224\/revisions\/136713"}],"wp:attachment":[{"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/media?parent=135224"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/categories?post=135224"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madrimasd.org\/blogs\/biologia_pensamiento\/wp-json\/wp\/v2\/tags?post=135224"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}