群体选择理论是说：进化可以通过生命体整个群体的生存能力差异来产生，而不是个体的生存差异。 这一理论之所以被否定是因为从数学上看它不太可信。
The idea that evolution can work by the differential survival of entire groups of organisms, rather than just of individuals, was rejected because it is mathematically implausible.
群体选择理论对此提出了一个解释，即尽管由于利他者相对于利己者处于不利的位置，利他者在每一个群体中的频率都会下降，但利他者在总体中的频率却有可能上升。
The theory of group selection proposed an explanation-even if the frequency of altruists is decreasing in every group of a deme, it can still increase in the whole population.
按照的他的理论，进化是群体的结果而不是个体的选择。
According to his theory, evolution is the result of the population and not the single individual.
克隆选择用来产生抗原的记忆细胞群体，免疫网络理论则用来抑制该群体规模的快速增长。
While the clonal selection principle is responsible for generating the memory cell population, the immune network theory prevents the population size from increasing quickly.
克隆选择用来产生抗原的记忆细胞群体，免疫网络理论则用来抑制该群体规模的快速增长。
While the clonal selection principle is responsible for generating the memory cell population, the immune network theory prevents the population size from increasing quickly.
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