Molecular Basis of Inheritance

DNA Replication – Meselson and Stahl Experiment

2 questions from 2 papers, each with its answer.

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Concepts tested

  • meselson-stahl-experiment
  • semi-conservative replication and cell count

All Questions

2022 1 question

  1. 1 Molecular Basis of Inheritance Hard
    Ten E.coli with $^{15}N$-dsDNA are incubated in medium containing $^{14}N$ nucleotide. After 60 minutes, how many E.coli cells will have DNA totally free from $^{15}N$?

2018 1 question

  1. 2 Molecular Basis of Inheritance Easy
    The experimental proof for semiconservative replication of DNA was first shown in a