An E. coli cell whose DNA contains N¹⁴ is placed in media with dNTPs containing a heavy isotope of nitrogen, N¹⁵,which incorporates into newly synthesized DNA. After one cell division, what will the DNA in the daughter cells look like?
A) One cell will have both strands of the helix N14; the other cell will have both strands of the helix N15.
B) One cell will have mostly N14 with a little bit of N15; the other cell will have mostly N15 with a little N14.
C) Each cell will have one strand of N14 and one strand of N15.
D) It is impossible to predict what the DNA in the daughter cells will look like.