TLS Online TPP Program

#Question id: 3839


Use the figure to answer the following question. In the late 1950s, Meselson and Stahl grew bacteria in a medium containing "heavy" (radioactive) nitrogen (15N) and then transferred them to a medium containing 14N (nonradioactive). Which of the results in the figure would be expected after one round of DNA replication in the presence of 14N?

#Unit 3. Fundamental Processes
  1. A

  2. B

  3. C

  4. D