Important Years in Biology for NEET

These are all mentioned important years in biology for NEET from NCERT text books. These years needs to remember for your neet examinations.

Important years in Biology for NEET

1731 – Many people of Bishnoi community sacrifice their lives saving trees (Jodhpur)

1770 – Priestley’s experiment by Bell Jar, Mice & Mint plant, Candle.

1774 – Discovery of oxygen by Joseph Priestley

1838 – Matthias Schleiden-Cell Theory                                                   

1829 – Theodore Schwann- Cell Theory

1850s –  Before industrialization => more white wing Moth

1854 – Julius von Sachs proved that glucose is formed in photosynthesis & stored as starch.

1855 – “Omnis cellula cellula” by Rudolf Virchow & complete the cell theory.

1856 – 1863 Mendel work on garden pea.

1860 – Hydroponics technique developed by Julie Von Sache

1865 – Mendel publishes his workon inheritance of character

1866 – Down’s Syndrome discovered by Langdon Down.

1869 – DNA as a acidic substance was 1st identified by Friedrich Meischer & termed a “Nuclein”

1891 – Fossils of Java man discovered in Java
          – Henking discovered X-body (X-chromosome) in insect. (XO- type sex determination)

1892 – Discovery of TMV by D.J. Ivanowsky

1898 –  M.W. Beijerinck demonstrated infectious nature of TMV
          – Discovery of Golgi Body by Camillo Golgi.

1900 – Rediscovery of Mendel’s work by —> • Hugo de Vries
           • Karl Corrence
           • Tschemark

1902 – Chromosomal theory of inheritance given by Sutton & Bovery.

1905 – Law of limiting factors for plants given by Blackmann

1920 – After Industrialisation => more black moth

1928 – Frederick Griffith’s Transformation  experiment on Streptococcus pneumonia bacteria

1933 – 1944 – Avery, Macleod McCarty used transformation principle of Griffith’s experiment & concluded that DNA is genetic material.

1938 – Coelacanth/Lobe Fines caught in South Africa —> Ancestor of amphibia.

1947 – At the time of our independence India’s population, was approximately 350 million .

1950 –  Electron microscope invention
            –  Tissue culture started

1951 – Family planning was initiated

1952 – Hershey & Chase experiment more correctly proved that DNA ie genetic material [ #unquivocal_proof ]

1953  – Discovery of ribosome by George Palade.
          – S.L Miller Experiment of evolution.
          – Double helical structure model of DNA given by Watson & Crick.

1958 – Matthew Meselson of Franklin Stahl experiment (E. coli in NH4CI medium) proved that DNA replication is semiconservative )
         –  Taylor study on vicia faba plant (used radioactive thymidind and proved  semiconservative nature of DNA)

1960 –  Green Revolution.

1963 – Restriction endonuclease isolated from E. coli.

1963 – Wheat varieties Sonalika f Kalyan Sona (High yield & Disease resistant ) introduced in INDIA

1966 – Derived semi dwarf varieties of rice introduced in India.

1969 – R.H. Whittaker proposed FIVE-KINGDOM Classification

1971 – Discovery of viroids by T.O. Diener
          –  Govt. of India legalised MTP.

1972 – Fluid Mosaic model of plasma membrane by Singer & Nicolson
          – 1st recombinant DNA developed by Stanley Cohen and Herbert Boyer
          – National committee for environmental planning and Coordination was established.
          – Wild life protection act in India.

1974 –  Water Act.  &  also Chipko movement

1980 –  Joint Forest movement

1981 – Air act.
           – AIDS was fired reported
           – Intrinsic growth rate of India (r= 0.0205) 

1983 – Eli Lilly American company human Insulin from E. coli.

1984 – Bhopal Tragedy
          – Ministry of Environment amd Forest.

1986 – Environment Act (NEPA)

1987 – Noise included in air pollution  
          – Montreal protocol (Canada)

1988 – National Forest Policy

1989 –  Montreal Protocol became effective.

1990 –  Delhi ranked 4th among 41 most polluted cities.

1990 – First clinical gene therapy was given to 14 yr old girl with ADA deficiency eye.

• Human Genome Project (HGP) launched.