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2018_2019学年高中生物3.2DNA分子的结构知识表格DNA的结构层次素材新人教版必修2.pptx

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DNA的结构层次,基本组成元素：C、H、O、N、P等,基本组成物质：磷酸、脱氧核糖、含氮碱基,基本组成单位：脱氧核苷酸（4种）,DNA单链：脱氧核苷酸链,DNA双链：DNA分子双螺旋结构,

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