The ultstracture specialities of each plant pollen are of obvious differences. They can provide some important form information for plant classification and evolution.
不同种植物花粉外壁纹饰存在一定差异，三大类型花粉外壁纹饰存在一定的演化关系，可为种间分类及演化关系提供依据。
SNP has showed the huge potential in the establishing in the rice genetic maps, genes cloning and functional genomics, MAS in rice breeding and studying in classification and evolution of germplasm.
单核苷酸多态性在水稻遗传图谱的构建、基因克隆和功能基因组学研究、标记辅助选择育种、遗传资源分类及物种进化等方面的应用具有巨大潜力。
Evolution of chemical matter and its level classification are not two irrelevant problems but two aspects of a problem.
化学物质的进化和化学物质的层次分类，是一个问题的两方面，而不是两个不相关的问题。
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