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Gaokao Biology Practice Question

在应用农杆菌侵染植物叶片获得转基因植株的常规实验步骤中, 不 需要的是

  1. A.用携带目的基因的农杆菌侵染植物细胞
  2. B.用选择培养基筛选导入目的基因的细胞
  3. C.用聚乙二醇诱导转基因细胞的原生质体融合
  4. D.用适当比例的生长素和细胞分裂素诱导愈伤组织生芽

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