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प्रश्न
State the difference between the structural genes in a Transcription Unit of Prokaryotes and Eukaryotes.
उत्तर
(a) In prokaryotes, the structural genes are polycistronic and continuous, whereas in eukaryotes, the structural genes are monocistronic and split.
(b) In prokaryotes, there is a single DNA-dependent RNA polymerase which synthesises all the types of RNAs (mRNA, tRNA and rRNA), whereas eukaryotes have three RNA polymerases—Pol I, Pol II and Pol III—to synthesise different types of RNAs.
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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
In split genes, the coding sequence are called ______.
The term gene was coined by ______.
The transcription unit is represented in the diagram given below.
Identify site (i), factor (ii), and Enzyme (iii) responsible for carrying out the process.
Exons help in synthesis of ______.
The equivalent of a structural gene is ______
Define a cistron. Giving examples differentiate between monocistronic and polycistronic transcription unit.
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?
