Advertisements
Advertisements
Question
Describe the process of transcription.
Advertisements
Solution
- 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.
APPEARS IN
RELATED QUESTIONS
Give diagrammatic representation to show a perfect pairing and any ‘two’ Wobble pairings.
Enlist the characteristics of genetic code.
Describe the process of transcription in protein synthesis.
Long Answer Question:
Justify the statement. If the answer is false, change the underlined word(s) to make the statement true
Transcription must occur before translation may occur.
Draw a neat and labelled diagram of transcription and processing of hn-RNA
Which process is shown in the following diagram?
Which process is shown in the diagram given below?
Explain in short.
Mutation
Study the following statements and select the correct option.
Statement A: The primary transcript produced in eukaryote is translated without undergoing any modification or processing.
Statement B: The hnRNA in humans has exons and introns.
During protein synthesis, a ribosome moves from 5 to 3 and of mRNA to recognize all codons. This movement of ribosome is called:
