A geneticist allows a cell to replicate in the presence of radioactive nucleotides. Which of the following would occur?
A. The DNA in one of the daughter cells would be radioactive but not in the other daughter cell.
B. The mRNA made by the daughter cells would be radioactive.
C. The DNA in each of the daughter cells would be radioactive.
D. The DNA would not be radioactive in either of the daughter cells. MCAT
Choose A, B, C or D as your solution.
The correct answer is C. This question relies on your knowledge of semiconservative DNA replication where a single double helix is separated in order for both strands of the double helix to serve as templates for the production of new strands.