During regulation of the lac operon, one of the conditions required for expression of the operon is the presence of lactose within the bacterial cell. This is because, in the form of allolactose, it interacts with the lac repressor and causes it to shift into an inactive state. Therefore, allolactose acts as a ____________ during regulation of the lac operon.
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Imagine a mutation occurrs that weakens or eliminates motif…
Imagine a mutation occurrs that weakens or eliminates motifs in the core promoter. Which of the following best describes the outcome?
In the diagram below, where does the RNA polymerase II bind?
In the diagram below, where does the RNA polymerase II bind?
You have identified a mutation in a bacterial operon, that p…
You have identified a mutation in a bacterial operon, that prevents binding of the sigma subunit to the DNA. What functional DNA sequence, has likely been mutated in this instance?
In this diagram of the process of transcription, what is D p…
In this diagram of the process of transcription, what is D pointing at?
In what direction is a polypeptide built?
In what direction is a polypeptide built?
In eukaryotes, where does pre-mRNA processing occur?
In eukaryotes, where does pre-mRNA processing occur?
What does it mean for two codons to be synonymous?
What does it mean for two codons to be synonymous?
Which of the following is NOT a spontaneous mutation event?
Which of the following is NOT a spontaneous mutation event?
Which type of mutagen squeezes in between DNA base pairs and…
Which type of mutagen squeezes in between DNA base pairs and can result in strand breakage?