 | Owen Goldin, Patricia Kilroe - 1997 - 276 páginas
...what we call different genera and orders. ... On the Degree to which Organisation Tends to Advance^ Natural Selection acts exclusively by the preservation...and accumulation of variations, which are beneficial under the organic and inorganic conditions to which each creature is exposed at all periods of life.... | |
 | Noretta Koertge - 1998 - 335 páginas
...edition of 1872) on the subject of progress. He sees the division as the very peak of organic perfection: Natural Selection acts exclusively by the preservation...and accumulation of variations, which are beneficial under the organic and inorganic conditions to which each creature is exposed at all periods of life.... | |
 | Kathleen E. Smith, David Ray Griffin - 2001 - 444 páginas
...Darwin, who was committed to the dictum natura nonfacit saltum (nature makes no jumps), famously said: "Natural selection acts only by the preservation and accumulation of small inherited modifications. . . . [N]atural selection [will] banish the belief of the continued creation of new organic beings,... | |
 | Timothy Shanahan - 2004 - 354 páginas
...even in the face of relatively unchanging environmental conditions (Darwin 1959, pp. 54950). Since "natural selection acts . . . exclusively by the preservation...and accumulation of variations, which are beneficial under the organic and inorganic conditions of life to which each creature is at each successive period... | |
 | Oliver J. Thatcher - 2004 - 456 páginas
...orders, and classes, as at the present time. On the Degree to which Organisation tends to advance. Natural Selection acts exclusively by the preservation...and accumulation of variations, which are beneficial under the organic and inorganic conditions to which each nature is exposed at all periods of life.... | |
 | Bernie Koenig - 2004 - 356 páginas
...the fittest. It is this process of survival and adaptation that Darwin called "natural selection." Natural Selection acts exclusively by the preservation...and accumulation of Variations, which are beneficial under the organic and inorganic conditions to which each creature is exposed at all periods of life.... | |
 | Thom Pain, Jr. - 2005 - 344 páginas
...can be used almost as well to describe the adaptive changes made possible by the memory mechanism. "Natural Selection acts exclusively by the preservation...and accumulation of variations, which are beneficial under the organic and inorganic conditions to which the creature is exposed at all periods of life.... | |
 | Michael C. Newman, William H. Clements - 2007 - 882 páginas
...New York, 1987, pp. 1-59. Population Genetics: Natural Selection 18.1 OVERVIEW OF NATURAL SELECTION Natural Selection acts exclusively by the preservation...and accumulation of variations, which are beneficial under the organic and inorganic conditions to which each creature is exposed at all periods of life.... | |
 | John B. Cobb - 2008 - 449 páginas
...macroevolution proceeds gradually, through a process comprised of tiny steps. As Darwin famously said: "Natural selection acts only by the preservation and...modifications, each profitable to the preserved being. . . . [Njatural selection [will] banish the belief of the continued creation of new organic beings,... | |
 | 118 páginas
...applied to the excavation of the deepest valleys or to the formation of long lines of inland cliffs. Natural selection acts only by the preservation and...modifications, each profitable to the preserved being ; and as modern geology has almost banished such views as the excavation of a great valley by a single... | |
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Natural selection acts only by the preservation and accumulation of small inherited modifications, each profitable to the preserved being... 
