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| Advantage of the Regulation of Gene Action |
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| An operon is the unit of transcription. When excess protein is present, it is no longer economical for the cell to use up its energy and materials in the synthesis of enzymes that are not immediately needed. Hence, the protein synthesis is stopped. This is clearly advantageous for the cell. |
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| Gene regulation also plays a role in growth and differentiation, causing morphogenesis. |
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| The constitutive genes keep on functioning all the time. They need not be repressed. Therefore, the regulator and operator genes are not associated with these genes. |
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