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

Semiconservative replication of DNA was first demonstrated in

Options

  1. ADrosophila melanogaster
  2. BEscherichia coti
  3. CStreptococcus pneumoniae
  4. DSalmonella typhimurium

Correct answer

B. Escherichia coti

Step-by-step solution

Semiconservative replication of DNA was first demonstrated in E. coli. According to the semiconservative mode proposed by Watson and Crick, each strand of the two double helices formed would have one old and one new strand. The semiconservative nature of DNA replication was proved by the experiment of Meselson and Stahl (1958).

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