Leading and Lagging Strand
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Q. During DNA replication, the strand that is formed continuously is called the ______ strand, while the strand formed discontinuously as fragments is the _______ strand.
- Leading, lagging
- Continuous, discontinuous
- Lagging, leading
- Leading, Okazaki
Q. How many DNA duplexes are obtained from one DNA duplex after 8 cycles of PCR?
- 8
- 16
- 128
- 256
Q. Study the given replication fork and select the correct statement:
- Strands I and II have identical base sequences
- Strands I and III will be covalently bonded to each other after the completion of replication process
- Strand II and IV have antiparallel orientation
- Strands III and IV will get hydrogen bonded to each other after the completion of replication process
Q. During DNA replication, the strand that is formed continuously is called the ______ strand, while the strand formed discontinuously as fragments is the _______ strand.
- Leading, lagging
- Continuous, discontinuous
- Lagging, leading
- Leading, Okazaki
Q. Synthesis of leading and lagging strand require a
- single primer
- single and many primers respectively
- many and single primers respectively
- many primers
Q. Assertion :Synthesis of daughter or new strand occurs continuously along the parent 3 → 5 strand. Reason: DNA polymerase can polymerise nucleotides in 3 → 5 direction on 5 → 3 strand.
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
Q. During DNA replication, the strand that is formed continuously is called the ______ strand, while the strand formed discontinuously as fragments is the _______ strand.
- Leading, lagging
- Continuous, discontinuous
- Lagging, leading
- Leading, Okazaki
Q. After 4 cycles of PCR how many DNA molecules are formed from one DNA molecule?
- 4
- 16
- 32
- 8
