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प्रश्न
Explain in short.
Transcription
उत्तर
- Transcription is the process of synthesis of mRNA from DNA. It takes place in the presence of RNA polymerase.
- During transcription, mRNA is produced as per the sequence of nucleotides present on the DNA.
- This mRNA sequence is always complementary to the DNA strand that is used for its synthesis.
- The thymine in DNA molecule is replaced by uracil in RNA, during the process of transcription.
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संबंधित प्रश्न
What is 'RNA'?
Very Short Answer Question:
Why the genetic code is considered as commaless?
Define mutation. State its two types.
Define.
Mutation
In following case what will be the corresponding sequence of the transcribed mRNA?
AGGTATCGCAT is a sequence from the coding strand of a gene.
Read the following statements and select the correct option.
- Structural genes in eukaryotes have interrupted non-coding sequences known as exons.
- The coding sequences or express sequences are defined as introns.
What will be the codon sequence on mRNA formed on template strand if the codon sequence on coding strand of transcription unit is ATG GTG AGC TAC GCG?
The sequence of nucleotides AUGCUUCUC indicates that it is a segment of ____________.
Exon part of mRNAs codes for ______
A mature mRNA consists of 900 bases without any stop codon in between. What would be the number of amino acids coded by this mRNA during translation?
For which of the following reasons genetic code is universal?
____________ refers to removal of introns and joining the exons in a defined order in a transcription unit.
Match the Column I (RNA polymerases) with Column II (Transcribed products) and select the correct option.
| Column I | Column II | ||
| i. | RNA polymeraseI | a. | t-RNA |
| ii. | RNA polymerase II | b | rRNA |
| iii. | RNA polymerase III | c. | hnRNA |
Select the correct option from the following:
____________ is the initiation codon.
Which one ofthe following shows clover leaf model?
Which one of the following codons will NOT pair with Anticodon of t-RNA?
Which one is a cell-coded protein formed in response to infection with most animal viruses:
Which of the following is transcribed and then translated to form a protein product?
Select the correct match from the following.
Which one of the following is not applicable to RNA?
