In the Operon concept, the regulator gene regulates chemical reactions in the cell by

A. inhibiting transcription of m-RNA

B. inactivating enzymes in the reaction

C. inhibiting the substrate in the reaction

D. inhibiting the migration of m-RNA into cytoplasm

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  1. Klinefelter's syndrome is developed when the chromosome in male is
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  3. A child is bom with an extra chromosome in each of its cells. This is usually the result of
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  5. The chromosomal theroy of heredity implies that
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  18. Albinism in com plants is best described as
  19. DNA duplication occurs in
  20. The science dealing with study of inheritance and variation is
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  22. An offspring of two homozygous parents different from one another by alleles at only one gene locus…
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  24. The segment of DNA which participates in crossing over is known as
  25. Crossing over in meiosis occurs in
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  29. Diakinesis is characterised by
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