Important Years in Biology for NEET Exam: Biology notes preparation is necessary for the students for the preparation of National Eligibility cum Entrance Examination (NEET). The exam is common test exam conducted for the students to take admission in medical colleges. The students who have studied biology as subject in science stream can apply for the exam and start their preparation for the exam. Students can check Biology Short Tricks, notes, syllabus, mock test here at LearningMantras.com.
These Important Years in Biology for NEET Exam are very helpful for NEET, AIIMS, JIPMER, PGIMER, CBSE Board, ICSE Board, Class 12th, 11th.
Important Years in Biology
1731 – Many people of the 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
1850 – 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 Saches.
1865 – Mendel publishes his work on the inheritance of character
1866 – Down’s Syndrome discovered by Langdon Down.
1869 – DNA as an acidic substance was 1st identified by Friedrich Meischer & termed a “Nuclein”
1891 – Fossils of Java man discovered in Java
1891 – Henking discovered X-body (X-chromosome) in insects. (XO- type sex determination)
1892 – Discovery of TMV by D.J. Ivanowsky
1898 – M.W. Beijerinck demonstrated the infectious nature of TMV
1898 – Discovery of Golgi Body by Camillo Golgi.
1900 – Rediscovery of Mendel’s work by —> • Hugo de Vries • Karl Currency • Tschemark
1902 – Chromosomal theory of inheritance given by Sutton & Bovery.
1905 – Law of limiting factors for plants given by Blackman
1920 – After Industrialisation => more black moth
1928 – Frederick Griffith’s Transformation experiment on Streptococcus pneumonia bacteria
1933-1944 – Avery, Macleod McCarty used the transformation principle of Griffith’s experiment & concluded that DNA is the 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
1950 – 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 the ribosome by George Palade.
1953 – S.L Miller Experiment of evolution.
1953 – 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 )
1958 – Taylor study on Vicia faba plant (used radioactive thymidine 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
1971 – Govt. of India legalised MTP.
1972 – Fluid Mosaic Model of the plasma membrane by Singer & Nicolson
1972 – 1st recombinant DNA developed by Stanley Cohen and Herbert Boyer
1972 – National Committee for environmental planning and Coordination was established.
1972 – Wildlife protection act in India.
1974 – Water Act. & also Chipko movement
1980 – Joint Forest movement
1981 – Air act.
1981 – AIDS was fired reported
1981 – Intrinsic growth rate of India (r= 0.0205)
1983 – Eli Lilly American company human Insulin from E. coli.
1984 – Bhopal Tragedy
1984 – Ministry of Environment and Forest.
1986 – Environment Act (NEPA)
1987 – Noise included in air pollution
1987 – 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**
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