组成染色体和染色质的主要物质是_刷题宝

题干

组成染色体和染色质的主要物质

是

A：DNA和RNA

B：蛋白质和DNA

C：蛋白质和RNA

D：DNA和脂质

上一题下一题 0.0难度选择题更新时间:2019-06-28 09:48:08

答案(点此获取答案解析）

B

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