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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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  2. Linkage is
  3. A colour-blind man marries the daughter of a colour-blind person. In their progeny
  4. A codon is a sequence of 3 nucleolides on
  5. Dyad is
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  19. Crossing over in meiosis occurs in
  20. Albinism in com plants is best described as
  21. The chromosomal theroy of heredity implies that
  22. The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
  23. The nuclear membrane completely disappears during
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  28. A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
  29. The segment of DNA which participates in crossing over is known as
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