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प्रश्न
An operon is a ______.
पर्याय
Protein that suppresses gene expression.
Protein that accelerates gene expression.
Cluster of structural genes with related function.
Gene that switches other genes on or off
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उत्तर
An operon is a cluster of structural genes with related functions.
Explanation:
An operon is a functional unit of DNA that contains a cluster of genes that are transcribed together into a single mRNA strand. This arrangement allows the cell to regulate a set of proteins with related metabolic functions, such as the enzymes needed to break down lactose, simultaneously. It typically consists of a promoter, an operator, and the structural genes themselves.
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संबंधित प्रश्न
Which one of the following is a stop codon?
(a) UAG
(b) UAC
(c) AUG
(d) UCA
Briefly describe the following:
Translation
The process of translation is ______.
The translation termination triplet is ______.
Which of the following statements is correct regarding ribosomes?
Regulation of gene expression occurs at the level of ______.
The first phase of translation is ______
Which of the following is true with respect to AUG?
(a) Identify the polarity of x to x’ in the diagram below and mention how many more amino acids are expected to be added to this polypeptide chain.
(b) Mention the codon and anticodon for alanine.
(c) Why are some untranslated sequences of bases seen in mRNA coding for a polypeptide? Where exactly are they present on mRNA?
How does initiation of the translation process occur in prokaryotes? Explain.
