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An operon is composed of?
An operon is a group of genes that operate together.Operon- a functioning unit of genomic DNA containing a cluster of genes under the control of a single regulatory signal or promoter.Operons are clusters of genes consisting of one operator and promoter. There are a lac operon, which is responsible for metabolism of glucose. And there is also the Trp operon, which is responsible for synthesising tryptophan.
In bacteria a group of genes that code for functionally related enzymestheir promoter site and the operator that controls them all function together as an?
operon. An operon is a unit of bacterial gene expression consisting of a promoter, an operator, and a cluster of genes that work together as a single transcriptional unit. The operator region controls the transcription of the genes within the operon in response to regulatory signals.
What is the mechanism by which a protein that binds to an operator inhibits transcription?
When a protein binds to an operator, it blocks the RNA polymerase from binding to the promoter region of the gene. This prevents the transcription process from starting, leading to inhibition of gene expression.
Where does transcription start in a prokaryotic promoter?
Transcription in a prokaryotic promoter starts at the DNA sequence called the "promoter region."
What is the region where RNA polymerase binds on DNA?
RNA polymerase binds to the promoter region of DNA to initiate transcription. The promoter region contains specific nucleotide sequences that help RNA polymerase recognize where to start transcribing the gene.
What turns off transcription by binding to the operator?
A repressor protein turns off transcription by binding to the operator region. By binding to the operator, the repressor prevents the RNA polymerase from binding to the promoter region and initiating transcription. This prevents the expression of the gene or genes downstream of the operator.
An operon is composed of?
An operon is a group of genes that operate together.Operon- a functioning unit of genomic DNA containing a cluster of genes under the control of a single regulatory signal or promoter.Operons are clusters of genes consisting of one operator and promoter. There are a lac operon, which is responsible for metabolism of glucose. And there is also the Trp operon, which is responsible for synthesising tryptophan.
What is promoters and an operator together called?
Operon. It contains the promoter, operator, and the structural gene.
In bacteria a group of genes that code for functionally related enzymestheir promoter site and the operator that controls them all function together as an?
operon. An operon is a unit of bacterial gene expression consisting of a promoter, an operator, and a cluster of genes that work together as a single transcriptional unit. The operator region controls the transcription of the genes within the operon in response to regulatory signals.
What is the mechanism by which a protein that binds to an operator inhibits transcription?
When a protein binds to an operator, it blocks the RNA polymerase from binding to the promoter region of the gene. This prevents the transcription process from starting, leading to inhibition of gene expression.
What is the region of DNA where RNA synthesis begins called?
The region of DNA where RNA synthesis begins is the promoter. DNA contains a number of upstream regulatory and promoter sequences but the region of DNA where RNA synthesis begins is the start codon. This is the first codon that translates into an RNA nucleotide.
Where does transcription start in a prokaryotic promoter?
Transcription in a prokaryotic promoter starts at the DNA sequence called the "promoter region."
What is the region where RNA polymerase binds on DNA?
RNA polymerase binds to the promoter region of DNA to initiate transcription. The promoter region contains specific nucleotide sequences that help RNA polymerase recognize where to start transcribing the gene.
Does cDNA have a promoter region?
Yes, cDNA does not have a promoter region because it is synthesized from mRNA and lacks the regulatory elements found in genomic DNA.
What happens when a repressor is bound to the operator?
When a repressor is bound to the operator, it physically blocks the RNA polymerase from binding to the promoter region of the gene, preventing transcription. This mechanism effectively shuts down gene expression by inhibiting the initiation of transcription of that specific gene.
Which of the statements best describes the promoter of a protein-coding gene?
The promoter is a nontranscribed region of a gene.
What is the region of DNA to which RNA polymerase bind?
promoter
