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The lac operon is found only in prokaryotes and consists of structural genes and a promoter and operator. Which of the following statements explains why we study the lac operon?

The lac operon is found only in prokaryotes and consists of structural genes and a promoter and operator. Which of the following statements explains why we study the lac operon? Correct Answer It represents a principal means by which gene transcription can be regulated.

Remember that operons are found in prokaryotes, not higher organisms. However, higher animals may utilize a similar mechanism. For the same reason, you must eliminate Choice B. Operons are a means of controlling transcription of genes, whereas Choice C focuses on what happens after transcription. Operons have nothing to do with the cell cycle.

Related Questions

Consider the following statements and choose the correct answer:
1. The structural genes direct the synthesis of cellular proteins through messenger RNA (mRNA)
2. The promoter gene determines whether or not the structural genes are to be repressed by the repressor
3. The regulator gene directs the synthesis of a protein which may be an active repressor or an inactive repressor
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