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प्रश्न
Do you think that the alternate splicing of exons may enable a structural gene to code for several isoproteins from one and the same gene? If yes, how? If not, why so?
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उत्तर
Functional mRNA of structural genes need not always include all of its exons. This alternate splicing of exons is sex-specific, tissue-specific, and even developmental stage-specific. By such alternate splicing of exons, a single gene may encode for several isoproteins and/or proteins of similar class. In absence of such a kind of splicing, there should have been new genes for every protein/isoprotein. Such an extravagancy has been avoided in natural phenomena by way of altemate splicing.
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संबंधित प्रश्न
What is a cistron?
Explain (in one or two lines) the function of the following:
tRNA
Explain (in one or two lines) the function of the following:
Exons
The transcription unit is represented in the diagram given below.
Identify site (i), factor (ii), and Enzyme (iii) responsible for carrying out the process.
Gene is:
The functional unit of DNA molecule that codes for particular gene product is ______.
Exons help in synthesis of ______.
A transcription unit is defined by three structural regions. Which of the following correctly lists these three regions in their proper order from 5' to 3' on the coding strand?
Which DNA sequence element is found at the 5' end of a transcription unit and serves as the binding site for RNA polymerase?
In prokaryotes, which of the following DNA sequences is typically found in the promoter region?
The Template Strand is also known by which alternative names?
Which strand has a polarity of 3' → 5' and serves as the actual template for RNA synthesis?
The Coding Strand is also known by which alternative names?
With respect to which strand are all coordinates such as 'upstream' and 'downstream' defined in a transcription unit?
Which organism type typically produces Polycistronic mRNA?
Define Introns in the context of eukaryotic split genes.
In the context of a transcription unit, how do the Promoter and Terminator work together to regulate the transcription process?
