Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2009ZoologyMolecular Basis of InheritanceActual

What is incorrect about the following figure representing DNA replication?

Options

  1. AThe direction of DNA replication in strand (i).
  2. BThe direction of DNA replication in strand (ii).
  3. CDiscontinuous replication of strand (i).
  4. DDiscontinuous replication of strand (ii).

Correct answer

C. Discontinuous replication of strand (i).

Step-by-step solution

DNA polymerase can polymerize nucleotides only in 5^ 3^ direction on 3^ 5^ strand because it adds them at the 3^ end. Since the two strands of DNA run in antiparallel directions, the two templates provide different ends for replication. Replication over the two templates thus proceeds in opposite directions. One strand with polarity 3^ 5^ forms its complementary strand continuously because 3^ end of the latter is open for elongation. It is called leading strand. Replication is discontinuous on the other template wi

Practice Molecular Basis of Inheritance on Quantrex Academy →

More from Molecular Basis of Inheritance

Which of the following statements about lac-operon is correct ? 2026Which of the following enzymes synthesizes precursor mRNA ? 2026Which of the following statements are correct with reference to a transcription unit ? A. A transcription unit in DNA is defined primarily by three regions : promoter, structural g 2026Which of the following statements are correct with reference to packaging of DNA helix ? A. Histones are organized to form a unit of eight molecules called histone octamer. B. Hist 2026Arrange the following steps of DNA fingerprinting in a correct sequence. A. Isolation of DNA and its digestion by restriction endonucleases. B. Hybridisation using a labelled VNTR 2026In the lac operon, the z gene codes for : 2026Given below are two statements : Statement I : In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic m 2025Match List I with List II: array |l|l|l|l| & List - I & & List - II A . & Alfred Hershey and Martha Chase & (i) & Streptococcus pneumoniae B. & Euchromatin & (ii) & Densely packed 2025 Full Molecular Basis of Inheritance list All NEET PYQs