What is the relationship between a gene and an operon?Group of answer choicesAn operon is a group of bacterial genes that share a common promoterAn operon is a bacterial gene that must have activation and repressionEvery bacterial gene is part of an operonAn operon is any bacterial gene
Question
What is the relationship between a gene and an operon?Group of answer choicesAn operon is a group of bacterial genes that share a common promoterAn operon is a bacterial gene that must have activation and repressionEvery bacterial gene is part of an operonAn operon is any bacterial gene
Solution
The relationship between a gene and an operon is that an operon is a group of bacterial genes that share a common promoter. In the context of molecular biology, an operon is a functioning unit of genomic DNA containing a cluster of genes under the control of a single promoter. These genes are transcribed together into an mRNA strand and either translated together in the cytoplasm, or undergo splicing to create monocistronic mRNAs that are translated separately, i.e. several strands of mRNA that each encode a single gene product. The result of this is that the genes contained in the operon are either expressed together or not at all. Several operons can exist in the DNA of a cell, each responsible for a different protein synthesis.
Similar Questions
Which of the following describes the trpR gene?Group of answer choicesIt is a gene in the trp operon, and it activates the expression of the trp operon.It produces a protein that binds to the trp operon and represses the expression of the trp operonIt is a gene in the trp operon and it represses the trp operon.It produces a protein that binds to the trp operon and activates the expression of the trp operon
An operon is a cluster of co-ordinately regulated genes. It includes structural genes (enzymes), regulatory genes (activators or repressors), and regulatory sites such as promoters and operators. Consider the following situation of operon.Regulatory element is present ----------- Operon ONMutation of Regulatory gene to lose function -------------- Operon OFFWhich of the following given statements is correct regarding this type of regulation? Genes in this operon are expressed unless they are switched off by a repressor protein The inactivation of the repressor shall lead to the turning on of the operon The absence of positive regulatory protein shall lead to turn off of the operon The inactivation of the repressor shall lead to the turning off of the operon
Which of the following would not be a component of an operon?ANSWERPromoterStart codonOperatorStructural genes
What is a prokaryotic operon? A group of proteins that operate in the nucleus A sequence of DNA that operates during cell division A group of genes randomly located in the bacterial chromosome A group of genes that are transcribed under different promoters A group of genes transcribed from a single promoter involved in the same metabolic pathway
/ A group of structural genes with a single promoter, operator and terminator, is called A. 'n Regulon / A regulon B. 'n Operon / An operon C. 'n Repressor / A repressor D. 'n Induseerder / An inducerReset Selection
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.