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When a mutation is on the operator a gene can die which leads to an evolution of the entire genetic makeup. Also when lactose is absent and the genes should be switched off.
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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.
What is the difference between an operon and a regulon?
1. For operon genes are located near each other. For regulon genes are present distinct site of DNA. 2. Operon may have specific operator for all genes. For regulon each gene have different operator.
What is the function of an operator in bacteria?
The function of an operator in bacteria can be defined as the required for the transport and metabolism of the lactose in Escherichia coli and some other enteric bacteria. It consist of three adjacent structural genes.
Is operon the sequence of bases on a gene that does not code for protein?
operon is a group of genes regulated by a single promoter and operator. . . generally all the genes (structural genes of a particular operon) regulate a specific metabolic pathway. . (eg : lac operon in bacteria; where 3 genes are regulated by a single promoter sequece which help in the catabolism of lactose). . . if you have any doubts mail me at vegi.chaitanya@gmial.com
Are all of organism's genes turned on at the same time?
No. Only certain genes are active at the same time. When they are not active, they are turned off.
What causes the lac genes in E. coli to turn off?
A lac repressor turns off the lac genes by binding to the operator.
A lac repressor turns ff the lac genes by binding to?
A lac repressor turns off the lac genes by binding to the operator
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.
A lac repressor turns off the lac genes by binding to?
When the lac repressor binds to the O region, RNA polymerase is prevented from beginning the process of transcription. In effect, the binding of the repressor protein turns the operon "off" by preventing the transcription of its genes. (Prentice Hall Biology Book .....Chapter 12 page 310)
What is the difference between an operon and a regulon?
1. For operon genes are located near each other. For regulon genes are present distinct site of DNA. 2. Operon may have specific operator for all genes. For regulon each gene have different operator.
What is a set of genes whose transcription is regulated by an operator gene is called?
Operon
What is a collective name for a group of genes involved in the same function their promoter site and their operator?
Operon
Can your genes turn on and off?
No, an organisms' genes cannot 'turn off' at any point. They are not mechanical in any way.
What are oprons?
Operons are clusters of genes that consisting of one operator and promoter. There are two kinds of operons they are: Lac operon and try operons. The lac operon consist of clusters of 3 genes which are responsible for metabolism of glucose. When there is lactose in the environment the lac operons is transcript. The lactose binds to the repressor that was binding to the operator inhibiting the poly RNA to transcript the gene, but when lactose binds it causes the conformation to change and resulting in falling of the operator. When the repressor falls off the poly RNA can transcript the gene. When lactose is not present the repressor is activated and binds to the operator inhibiting poly RNA from transcribing the gene.The try operons consist of 5 genes under the control of one operator and promoter for synthesising trytopahan. When tryptophan is not present in the environment the gene is transcripted. When there no tryptophan the repressor is inactive and falls of the operator thus letting poly RNA transcriping the gene. When tryptophan is present there is no need in making the trypophan. The trypophan binds to the repressor activating and letting it bind to the operator and inhibiting the poly RNA from transcribing the gene.
What does an automatic cut off when you do one properly attached to a Personal water craft operator?
If the operator falls off, it stops the engine.
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 the function of an operator in bacteria?
The function of an operator in bacteria can be defined as the required for the transport and metabolism of the lactose in Escherichia coli and some other enteric bacteria. It consist of three adjacent structural genes.
