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Gaokao Biology Practice Question

2.(6分)关于同一个体中细胞有丝分裂和减数第一次分裂的叙述 ,正确的是 ( )

  1. A.两者前期染色体数目相同,染色体行为和 DNA分子数目不同
  2. B.两者中期染色体数目不同,染色体行为和 DNA分子数目相同
  3. C.两者后期染色体数目和染色体行为不同, DNA分子数目相同
  4. D.两者末期染色体数目和染色体行为相同, DNA分子数目不同

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