| natural selection |
Evolutionary change based on the differential reproductive success of individuals within a species.
출처: highered.mcgraw-hill.com/sites/0072549238/student_...
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| natural childbirth |
a technique of giving birth that stresses relaxation techniques so that the use of pain-relieving drugs can be minimized; also called prepared childbirth
출처: www.american-depot.com/services/resources_gl_n.asp
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| natural killer cell |
A type of lymphocyte. Like cytotoxic T cells, NK cells attack and kill tumor cells and protect against a wide variety of infectious microbes. They are "natural" killers because they do not need additional stimulation or to recognize a specific antigen in order to attack and kill. Persons with immunodeficiencies such as those caused by HIV infection have a decrease in natural killer cell activity.
출처: www.amfar.org/cgi-bin/iowa/bridge.html
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| natural selection |
Difference in reproductive success and/or survivorship of individuals that result in the unequal contribution of genotypes to the gene pool of the next generation.
출처: www.modernhumanorigins.com/n.html
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| natural selection |
A natural process that results in the survival and reproductive success of only the individuals or groups best adjusted to their environment, while those less adapted tend to be eliminated. The genetic qualities of those best suited to their environment are passed on to succeeding generations.
출처: www.angelfire.com/trek/pathfinderalliance/terminol...
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