Advertisements
Advertisements
Questions
Draw a neat and labelled diagram of transcription and processing of hn-RNA
Explain processing of hn-RNA with the help of neat and labelled diagram.
Solution 1
Solution 2
- In eukaryotes, forms of RNA transcribed from DNA are called primary transcripts. Such transcripts undergo changes called processing or maturation before becoming functional.
- The primary transcript is non-functional and contains both exons and introns.
- During processing, only introns are removed by the process called splicing.
- Exons are joined in a definite sequence (order) by the DNA ligase enzyme.
- Heterogeneous nuclear RNA undergoes the process of capping and tailing.
- In capping, methylated guanosine triphosphate is added to the 5’ end of hnRNA.
- In tailing, polyadenylation (addition of multiple adenine nitrogen bases) takes place at 3’end.
- It is the fully processed hnRNA, now called m-RNA.
APPEARS IN
RELATED QUESTIONS
Very Short Answer Question:
Why the genetic code is considered as commaless?
Long Answer Question:
Justify the statement. If the answer is false, change the underlined word(s) to make the statement true
The job of mRNA is to pick up amino acids and transport them to the ribosomes.
In mRNA strand having specific number of codons, if the 23rd codon UUA is replaced by UAA, what will be the change found in synthesized polypeptide chain?
For which of the following reasons genetic code is universal?
The mRNA AUGCAGAUACGC recognizes four amino acids and this character of the code referred to as ____________.
Identify the process represented in the diagram given below.
Which one of the following is NOT essential for synthesis of protein in a normal cell?
Initiation of polypeptide chain in protein synthesis is induced by:
Describe the process of transcription.
Protein synthesis occurs in ______.
