Multiple Choice
Which of the following is a mechanism by which eukaryotes normally regulate gene expression?
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16. Regulation of Expression
Introduction to Regulation of Gene Expression
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Both repressible and inducible operons control gene expression at the level of __________.
A
DNA packing
B
post-transcriptional processing
C
translation
D
post-translational processing
E
transcription
Verified step by step guidance1
Understand that operons are a cluster of genes under the control of a single promoter and are common in prokaryotes like bacteria.
Recognize that both repressible and inducible operons are mechanisms of gene regulation that control whether genes are transcribed into mRNA.
Identify that transcription is the process where the DNA sequence of a gene is copied into mRNA, which is the first step in gene expression.
Note that repressible operons are typically turned off by the presence of a specific molecule, while inducible operons are turned on by the presence of a specific molecule.
Conclude that both types of operons control gene expression at the level of transcription, as they regulate the initiation of mRNA synthesis from DNA.
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