题目内容：
有丝分裂过程中，DNA的合成主要发生在（ ）。 A．G1期
B．G2期
C．S期
D．M期
参考答案：
答案解析：
单选题：有丝分裂过程中，DNA的合成主要发生在（ ）。
- 题目分类：初中生物
- 题目类型：单选题
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有丝分裂过程中，DNA的合成主要发生在（ ）。 A．G1期
B．G2期
C．S期
D．M期
有丝分裂过程中，DNA的合成主要发生在（ ）。 A．G1期
B．G2期
C．S期
D．M期
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