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Multiple Choice
Which best describes a terminator of a gene?
A
A protein that initiates DNA replication
B
A region where RNA polymerase binds to start transcription
C
A DNA sequence that signals the end of transcription
D
A sequence that codes for a start codon in mRNA
Verified step by step guidance
1
Understand the concept of transcription: Transcription is the process by which RNA is synthesized from a DNA template. RNA polymerase is the enzyme responsible for this process.
Learn the role of a terminator: A terminator is a specific DNA sequence that signals RNA polymerase to stop transcription. It marks the end of the gene being transcribed.
Differentiate between the options: Analyze each option provided in the question. For example, a protein that initiates DNA replication is unrelated to transcription, and a region where RNA polymerase binds to start transcription is called a promoter, not a terminator.
Focus on the correct description: The terminator is a DNA sequence that signals the end of transcription, ensuring that RNA polymerase stops synthesizing RNA at the appropriate location.
Review the importance of terminators: Terminators are crucial for proper gene expression, as they ensure that transcription ends at the correct point, preventing unnecessary or erroneous RNA synthesis.