细菌的遗传重组 Transformation. Conjugation. Transduction Gene transfer in bacteria Transformation Conjugation Transduction Recipient Lysis of Donor cell cell Donor ce∥ Recipient cell medium.Don。 r cell Don。 r DNa is packaged plasmid in bacteriophage Recipient Donor dna is ysis of donor cell cell transferred directly to Donor DNA is packaged recipient through a in released bacteriophage connecting tube. Contact and transfer are promoted by a specialized plasmid Donor dNa is in the donor cell Donor dna is transferred taken up by recipient. when phage particle infects recipient cell
细菌的遗传重组 Transformation, Conjugation, Transduction
转化实验对DNA 是遗传物质的证明 Kill Polysaccharides Lipids RNa Protein DNA LIVE R CELLS R R R R(S) Demonstration that DNA is the transform Ing agent. DNA is the only agent that produces smnooth(S) colonies when added to live r cells
转化实验对 DNA 是遗传物质的证明
转化( Transformation) Natural transformation Artificial transformation 易转化菌属 链球菌属 Streptococcus 血杆菌属 Haemophilus 芽孢杆菌属 Bacillus 奈瑟氏球菌属 Neisseria 假单孢杆菌属 Pseudomonas 大肠杆菌属" Escherichia Competent recipient cell
转化（Transformation） • Natural transformation 、 Artificial transformation • 易转化菌属 链球菌属 Streptococcus 嗜血杆菌属 Haemophilus 芽孢杆菌属 Bacillus 奈瑟氏球菌属 Neisseria 假单孢杆菌属 Pseudomonas 大肠杆菌属 Escherichia • Competent recipient cell