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प्रश्न
Very Short Answer Question:
Why are Okazaki fragments formed on lagging strand only?
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उत्तर
- The two strands in DNA are antiparallel i.e. one strand runs in 5’ → 3’ direction whereas the other runs in 3’ → 5’.
- The DNA polymerase synthesizes a new DNA strand in 5’ → 3’ direction only.
- Leading template is synthesized continuously and lagging template is synthesized discontinuously.
- Due to 5’ → 3’ polymerizing activity of DNA polymerase Okazaki fragments are formed only on lagging strand only.
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संबंधित प्रश्न
Long Answer Question:
Explain the process of DNA replication.
a) Identify the figure given below
b) Redraw the structure as a replicating fork and label the parts
c) Write the source of energy for this replication and name the enzyme involved in this process.
d) Mention the differences in the synthesis of protein, based on the polarity of the two template strands.
For which of the following reason RNA primer is must for initiation of DNA replication?
Which of the following is the function of single-strand binding proteins?
Match the following column.
| Column - I | Column - II |
| (A) DNA structure | 1. Muller and stadder |
| (B) Semiconservative replication of DNA | 2. Beadle and partum |
| (C) One gene-one enzyme theory | 3. Watson and crick |
| (D) Induction of mutation | 4. Massillon and stahl |
What background information did Watson and Crick had available with them for developing a model of DNA? What was their own contribution?
Select the incorrect statement regarding DNA replication.
Enzyme involved in synthesis of RNA primer.
Statement I - In prokaryotes, there is only replicon however in eukaryotes, these are several replicons in tandem.
Statement II - Two separated strands in a replicon of DNA are prevented from re-joining by helicase enzyme.
In light of above statements, choose the correct answer from the option given below.
Which of the following is classified as an autocatalytic function of DNA?
