Twenty- Five Years Ago, When Oshima and Colleagues Discovered That

question 20

Multiple Choice

Twenty- five years ago, when Oshima and colleagues discovered that a mutation in the GAL4 gene led to the inability to synthesize all five enzymes required for galactose catabolism breakdown) , they couldn't be blamed for wanting to apply a bacterial model to explain this finding. What they expected, but did not find, was

• A) for chromatin decondensation to play an important role in regulating the genes of galactose catabolism.
• B) for all five genes to constitute an operon.
• C) five widely separated genes, each containing a GAL4 binding site in its regulatory region.
• D) for transcription to be important in regulating the genes of galactose catabolism.

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The reduction in costs achieved during a fiscal year, enhancing the organization's profitability.

Discount Rate

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