自然选择有三种主要类型:(1)定向选择(directional selection):选择向极端类型倾斜,一般发生于环境发生变化或种群迁入新环境时.如抗性选择、工业黑化.
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Directional selection 定向选择 ; 定向选择 ; 定向淘汰 ; 定向选择定向选择 Artificial selection 人工选择 ; 人工选择 ; 人为淘汰 ; 人工淘汰
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... directional lighting 定向照明定向照明 directional selection 定向选择定向选择 directionality problem 方向问题 ...
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moderate directional selection 中等定向选择
bi-directional selection 双向选择法
Early directional selection 早期定向选择
directional selection of pathogen 病原物定向选择
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A cotton mutant, R1098 with the trait of resistance to glyphosate, was obtained by the method of somatic cell inducing and continued directional selection.
采用体细胞连续定向筛选技术,结合体细胞诱变技术,获得非转基因抗草甘膦的棉花突变体—r 1098。
Our school has provided the graduates with employment information, and recommended the best fit for the job, based on the principle of dual - directional selection.
学校为毕业生提供就业信息,本着双向选择的原则,择优推荐工作。
This paper briefs the long borehole directional drilling technology, selection of typical equipment, process, measuring system and application in coalmines.
本文介绍深孔定向钻进技术的原理、典型的设备选择、工艺、测量系统以及该技术在煤矿工程中的应用。
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