第四章 动物基因组：基因和DNA.ppt

文档介绍：Chapter 4 Animal Genome:Gene and DNA第四章动物基因组:基因和DNA
Nucleic acids are ic materials核酸是遗传物质
Structure of nucleic acids核酸的结构
Synthesis of nucleic acids核酸的合成
Gene structure基因结构
Variations of gene and DNA 基因和DNA的变异
Translation: synthesis of protein 蛋白质的合成--翻译
Nucleic acids are ic materials
核酸是遗传物质
Chromosome
染色体
protein蛋白质
DNA
RNA
Which one is ic material?
哪一个是遗传物质?
Experiments prove that DNA is the molecule of heredity
Transformation experiment with pneumonia
Transfection experiment with bacteriophage
Experiment with tabauo mosaic virus (TMV)
Transformation experiment
肺炎球菌的转化实验
无毒的RII肺炎
球菌(小的)由被杀
死的SIII (大的)的
DNA转化成有毒的肺
炎球菌
Streptococus pneumoniae肺炎球菌
S型:多糖组成荚膜,分SI, SII, SIII
R型:无荚膜,分RI, RII, RIII
Transformation experiment with pneumonia肺炎球菌感染小鼠实验
象加热杀死的SIII能使不致
病的RII变成能致病的SIII,这种
现象叫转化(transformation)
把SIII死菌中能转化RII的物质叫
转化因子
证明转化因子是DNA的实验
A diagram of the experiment that demonstrated that DNA is the active material in bacterial transformation
Transfection experiment with bacteriophage T2
T2噬菌体的侵染实验(I)