Q3 of 71 Page 41

Discuss the significance of heavy isotope of nitrogen in the Meselson and Stahl’s experiment.

Heavy isotope of nitrogen in the Meselson and Stahl’s experiment showed that the DNA is of intermediate density. Which was between N14 and N15.This showed that the hybrid DNA has one strand of N14 and one strand of N15 showing DNA was semi-conservative in nature.


More from this chapter

All 71 →
1

Define transformation in Griffith's experiment. Discuss how it helps in the identification of DNA as the genetic material.

 2

Who revealed biochemical nature of the transforming principle? How was it done?

 4

Define a cistron. Giving examples differentiate between monocistronic and polycistronic transcription unit.

 5

Give any six features of the human genome.