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Biology - Heredity and Evolution

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16. The important components of DNA molecule are A(Adenine), T(Thymine), G(Guanine) and C(Cytosine). According to Chargaff's rule, their amount in DNA molecule is (NTSE Jharkhand, Stage-I, 2014-15)

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17. Colchicine is a chemical substance used to bring about the following process artificially. (NTSE Karnataka, Stage-I, 2014-15)

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18. A cross between a tall plant (TT) and short pea plant (U) resulted in progeny that were all tall plants because (NTSE Chandigarh, Stage-I, 2014-15)

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19. According to evolutionary theory, formation of new species is due to (NTSE Chandigarh, Stage-I, 2014-15)

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20. Which of the following statement is incorrect? (NTSE Chandigarh, Stage-I, 2014-15)

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Heredity and Evolution