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प्रश्न
Recall the experiments done by Frederick Griffith, Avery, MacLeod and McCarty, where DNA was speculated to be the genetic material. If RNA, instead of DNA was the genetic material, would the heat killed strain of Pneumococcus have transformed the R-strain into virulent strain? Explain.
उत्तर
RNA is less stable than DNA and hence, DNA replaced RNA as the genetic material In the living world. If RNA was the genetic material in Griffith's experiment, it would have been destroyed by heat. Thus, the heat-killed strain of Pneumococcus could not have transformed the R-strain Into virulent strain.
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संबंधित प्रश्न
Describe the Hershey and Chase experiment. Write the conclusion drawn by the scientists after their experiment.
Describe the experiment performed by Griffith. What conclusions did he infer from his observations?
Give one significant contribution of the given scientists
H. Boyer
The two strands of DNA are held together by ______.
Which one is a hereditary disease?
Which one among the following was the first genetic material?
Which of the following criteria must a molecule fulfill to act as genetic material?
- It should not be able to generate its replica.
- It should chemically and structurally be stable.
- It should not allow slow mutation.
- It should be able to express itself in the form of Mendelian Characters.
In Griffith's transforming principle, if heat killed S - strain is injected into mice, then ______.
Define transformation in Griffith's experiment. Discuss how it helps in the identification of DNA as the genetic material.
Who revealed biochemical nature of the transforming principle? How was it done?
