下列关于“DNA的粗提取和鉴定”实验的叙述中，正确的是( )_刷题宝

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下列关于“DNA的粗提取和鉴定”实验的叙述中，正确的是( )

A：用鸡血作为材料，原因是鸡血红细胞有细胞核，其他动物红细胞没有细胞核

B：用不同浓度的NaCl溶液进行DNA粗提取，原因是DNA在其中溶解度不同

C：用酒精进行提纯，原因是DNA溶于酒精，蛋白质不溶于酒精

D：用二苯胺试剂进行鉴定，原因是DNA溶液中加入二苯胺试剂即呈蓝色

上一题下一题 0.0难度选择题更新时间:2014-03-07 05:17:19

答案(点此获取答案解析）

B

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