Question

select all that apply

which are components of an operon in a sequence of dna? more than one answer may be correct.

regulatory region
repressor
structural genes
inducer
rna polymerase

Explanation:

Identify components physically located on the DNA sequence

An operon is a functioning unit of DNA containing a cluster of genes under the control of a single promoter. The physical components of an operon within the DNA sequence itself include:

• Regulatory region: This includes the promoter (where RNA polymerase binds) and the operator (where a repressor binds), both of which are specific DNA sequences.
• Structural genes: The actual protein-coding sequences of DNA that are co-transcribed into a single polycistronic mRNA.

Evaluate non-DNA components

The other options are molecules that interact with the operon but are not part of the DNA sequence itself:

• Repressor: A protein molecule that binds to the operator DNA sequence.
• Inducer: A small molecule (like lactose or allolactose) that binds to the repressor protein.
• RNA polymerase: An enzyme (protein complex) that transcribes the DNA into RNA.

Answer:

• Regulatory region (Correct answer)
• Repressor
• Structural genes (Correct answer)
• Inducer
• RNA polymerase