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प्रश्न
Describe the process of transcription.
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उत्तर
- During transcription, information of only one strand of DNA is copied into RNA.
- DNA transcription takes place in nucleus in eukaryotes whereas translation occurs in cytoplasm.
- The promotor is located towards 5’ end of structural gene.
- DNA dependent RNA polymerase catalyses polymerisation in 5’→3’ direction. So the DNA strand having 3’→5’ polarity acts as template strand. The other strand of DNA having 5’→3’ polarity is complementary to template strand.
- The information on this strand of DNA is copied on mRNA.
- The terminator is located at 3’ end of coding strand i.e. downstream. It defines the end of the transcription process.
- As the mRNA grows, the transcribed region of DNA molecule becomes spirally coiled and attains (regains) double helical form.
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संबंधित प्रश्न
What is degeneracy of genetic code?
What is meant by the activation of amino acids?
In following case what will be the corresponding sequence of the transcribed mRNA?
AGGTATCGCAT is a sequence from the coding strand of a gene.
From the following which one is NOT needed in formation of polypeptide chain?
Which of the following represents the central dogma of molecular biology?
Identify the property of genetic code represented by the following case:
Each codon codes for a particular amino acid.
______ catalyzes polymerization in 5' → 3' direction during transcription.
In a eukaryotic transcription and translation take place ______.
Explain the process of binding of ribosomal units to mRNA during protein synthesis.
Which of the following functions are performed by proteins produced through protein synthesis?
