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Figure 1: Schematic representation of how antibiotic resistance is enhanced by natural selection. The top section represents a population of bacteria before exposure to an antibiotic. The middle section shows the population directly after exposure, the ph |
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There are 12 summaries on Natural selection.
Encyclopedia and Summary Information
summary from source:
 Natural Selection Summary
1,261 words, approx. 4 pages
 Although not the only agent of evolutionary change, natural selection is certainly the most important mechanism of adaptive evolutionary change in populations of organisms. Through the process of natural selection, individual organisms become better... summary from source:
 Breeding Systems Summary
1,193 words, approx. 4 pages
Breeding systems in plants refer to the variety of ways plants answer the general question of "Who mates with whom" by answering specific questions such as whether flowers mature at the same time, whether a plant has more than one kind of... summary from source:
 Natural Selection Summary
632 words, approx. 2 pages
Evolution and the theory of natural selection are the principle unifying concepts in biology. This is as true now in the age of molecular biology as it was a century ago. The unification stems from the fact that details of embryology, morphology,... summary from source:
 Natural Selection Summary
582 words, approx. 2 pages
Natural selection is the differential survival and reproduction of individuals with particular phenotypes, the physical manifestation of genotypes. Natural selection works only on the phenotypes of individuals. Natural selection produces adaptation... summary from source:
 Natural Selection Summary
482 words, approx. 2 pages
Alfred Russel Wallace (1823–1913) and Charles Darwin (1809–1882) independently devised the same theory of how species could automatically change, without human or divine intervention, providing a plausible mechanism for EVOLUTION to take... summary from source:
 Natural Selection Summary
358 words, approx. 1 pages
process that results in the adaptation of an organism to its environment by means of selectively reproducing changes in its genotype, or genetic constitution. A brief treatment of natural selection follows. For full treatment, &see; evolution: The... summary from source:
Gould, Stephen Jay Summary
300 words, approx. 1 pages
(born September 10, 1941, New York, New York, U.S.—died May 20, 2002, New York) American paleontologist, evolutionary biologist, and science writer. Gould graduated from Antioch College in 1963 and received a Ph.D. in paleontology at Columbia... summary from source:
Selective Pressure Summary
148 words, approx. 1 pages
Selective pressure is any phenomena which alters the behavior and fitness of living organisms within a given environment. It is the driving force of evolution and natural selection, and it can be divided into two types of pressure: biotic or abiotic.... summary from source:
Natural Selection Summary
131 words, approx. 0 pages
Process that results in adaptation of an organism to its environment by means of selectively reproducing changes in its genotype. Variations that increase an organism's chances of survival and procreation are preserved and multiplied from generation to... summary from source:
Natural Selection Summary
102 words, approx. 0 pages
Also known as ‘survival of the fittest’, natural selection is the keystone of the theory of evolution proposed by Charles Darwin. In essence the theory proposes that the development of life arose from the mechanism that the life form which... summary from source:
Natural Ventilation Summary
32 words, approx. 0 pages
Any system whereby air is circulated through and within a building by allowing natural variations in air pressure to move it from one area to another. See also: FORCED... summary from source:
 Natural selection Summary
7,852 words, approx. 26 pages
Natural selection is the process by which favorable traits that are heritable become more common in successive generations of a population of reproducing organisms, and unfavorable traits that are heritable become less common. Natural selection acts on... 
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