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Question
State the difference between the structural genes in a Transcription Unit of Prokaryotes and Eukaryotes.
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Solution 1
In prokaryotes, the structural genes are polycistronic and continuous, whereas in eukaryotes, the structural genes are monocistronic and split.
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.
Solution 2
RELATED QUESTIONS
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 correct sequence of gene expression is:
- Formation of the primary transcript
- Regulation of splicing
- Transport of mRNA from the nucleus to the cytoplasm
- Translation
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.
Gene is:
The functional unit of DNA molecule that codes for particular gene product is ______.
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?
