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प्रश्न
Explain the processing the hnRNA needs to undergo before becoming functional mRNA eukaryotes.
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उत्तर
The precursor of mRNA, i.e. hnRNA, contains both introns and exons. Introns are removed and exons are joined by a process called splicing.
The remaining mRNA is processed in two ways:
(1) Capping: Methyl guanosine triphosphate is added to the 5′ end of hnRNA.
(2) Tailing: Adenylate residues are added to the 3′ end of hnRNA.
When hnRNA is fully processed, it is known as mRNA, which is transported out of the nucleus to get translated.
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संबंधित प्रश्न
Following are the features of genetic codes. What does each one indicate?
Stop codon; Unambiguous codon; Degenerate codon; Universal codon.
Describe the process of transcription in bacteria
(i) Name the scientist who suggested that the genetic code should be made of a combination of three nucleotides.
(ii) Explain the basis on which he arrived at this conclusion.
State the aim and describe Messelson and Stahl’s experiment.
A mRNA molecule is produced by ____________.
Name the parts marked ‘A’ and ‘B’ in the given transcription unit:
The process of copying genetic information from one strand of DNA to RNA is termed as ______.
In a cell, DNA transcription is halted when ______
Read the following and answer from given below:
The translation is the process of polymerization of amino acids to form a polypeptide. The order and sequence of amino acids are defined by the sequence bases in the mRNA. The amino acids are joined by a bond called a peptide bond. The ribosome is the site of protein synthesis.
Which ion is essential for the association of both units of the ribosome at the time of protein formation?
The process of copying genetic information from one strand of the DNA into RNA is termed as ______
