Multiple Choice
Both repressible and inducible operons control gene expression at the level of __________.
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16. Regulation of Expression
Introduction to Regulation of Gene Expression
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Which of the following regulatory elements is not composed of DNA sequences?
A
Enhancers
B
Promoters
C
Transcription factors
D
Silencers
Verified step by step guidance1
Understand the role of regulatory elements in gene expression. Regulatory elements are sequences in the DNA that control the transcription of genes.
Identify the types of regulatory elements mentioned: Enhancers, Promoters, and Silencers. These are all DNA sequences that interact with proteins to regulate gene expression.
Recognize that transcription factors are proteins, not DNA sequences. They bind to these regulatory DNA sequences to influence the transcription of genes.
Differentiate between DNA sequences and proteins. Enhancers, Promoters, and Silencers are DNA sequences, while Transcription factors are proteins that bind to these sequences.
Conclude that among the options given, Transcription factors are not composed of DNA sequences, as they are proteins that interact with DNA.
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