What is the operator? A cis-regulatory DNA sequence in prokaryotes located within or nearby the gene promoter A DNA sequence that regulates the termination of transcription A gene in the bacterial genome only located at the origin of replication A DNA sequence that regulates the transport of DNA out of the bacterial nucleus The site of initiation of translation
Question
What is the operator? A cis-regulatory DNA sequence in prokaryotes located within or nearby the gene promoter A DNA sequence that regulates the termination of transcription A gene in the bacterial genome only located at the origin of replication A DNA sequence that regulates the transport of DNA out of the bacterial nucleus The site of initiation of translation
Solution
The operator is a cis-regulatory DNA sequence in prokaryotes located within or nearby the gene promoter. It is a part of the operon, a functioning unit of genomic DNA containing a cluster of genes under the control of a single promoter. The operator sequence is the site where a repressor protein can bind and block the transcription of the genes located downstream of the operator. Therefore, it plays a crucial role in the regulation of gene expression in prokaryotes.
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