💥Important Points of NCERT 💥
🌟1. 1935 : Stanley - Crystallised viruses.
🌟 2. 1937 : Ramde o Misra obtained Ph.D. in Ecology from Lee ds university (U.K.).
🌟 3. 1938 : Coelocanth fish caught in South Africa.
🌟 4. 1945 : Fleming, Chain & Florey - Awarded Nobel prize.
🌟 5. 1950 : Watson obtained Ph.D. on a study of the effect of hard X-rays on bacteriophage multiplication.
🌟 6. 1951 : Family planning programme started in India.
🌟 7. 1952 : Hershey & Chase-experiment on bacteriophage or Bacterial virus
gives unequivocal proof that DNA is the genetic material.
🌟 8. 1953 : Miller experiment - Methane, ammonia, hydrogen & water vapour.
🌟9. 1953 : Watson & Crick - Double helical structure of B-DNA & replication scheme.
🌟10 . 1953 : Palade : Discovered ribosome.
🌟11 . 1954 : Ramachandran - Triple helical model of collagen, published in Nature.
🌟12 . 1954 : Crick complete d Ph.D. on a thesis “X-rays diffraction :
polypeptides and proteins.
🌟13 . 1958 : Meselson & Stahl - Work on E.coli proves semiconservative
replication of DNA in prokaryotes.
🌟14 . 1958 : Taylor - Work on Vicia faba proves semiconservative replication of DNA in eukaryotes.
🌟15. 1960 : Katherine Esau - Published “Anatomy of Seed Plants.”
🌟 16. 1961 : Melvin Calvin - Nobel Prize.
🌟 17. 1962 : Watson, Crick and Wilikins - Nobel Prize.
🌟 18. 1963 : Wheat varieties (Sonalika & Kalyan sona) introduced.
🌟 19. 1963 : Two enzyme responsible for restricting growth of bacteriophage
in E.coli were isolated.
🌟 20. 1966 : Derivative of IR-8 & Taichung native-I introduced.
🌟 21. 1969 : Whittaker - Five kingdom classification.
