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It is possible to obtain high yielding and disease resistance plants by using Tissue culture, Through the application of tissue culture it is not possible to maintain the balance in the nature, The technique followed to develop large number of plants in a limited space is Tissue culture., The theory which explains the evolution in the light of natural selection of inherited characteristics is NeoDrawinism,
The carriers of heredity are Genes, The term genetics was coined by Bateson in 1905, The father of modern Genetics is Gregor Johann Mendel, The mendelian factors are now called Genes, The plants selected by Mendel to carry out his experiments was Pea plant, A cross between two plants carrying one pair of contrasting characters is called Monohybrid cross,
A cross between two plants carrying two pair of contrasting characters is called dihybrid cross, The checker board for F2 generation was first designed by Punett, The ratio of the dihybrid cross of the Mendel experiment is 9:3:3:1, The pair of factors for a given character separates in equal ratio at the time of gamete formation during meiosis is Law of Segregation, When two organisms possess more than one set of traits, each pair of trait is inherited quite independently of the inheritance of the other pairs of factors is Law of independent assortment.
The man belongs to the order Hominidae, The ratio between the weight of brain and spinal cord in cat is 4 : 1, The ratio between the weight of brain and spinal cord in Monkey is 8 : 1, The ratio between the weight of brain and spinal cord in Man is 55 : 1
