If DNA replication is conservative, what woul be expected distribution of labelled DNA molecule after two generations.

Options

A. 1/4 of the molecules would be `N^(15)" "N^(15)`
B. 3/4 of the molecues would be `N^(14)" "N^(14)`
C. No `N^(14)" "N^(15)` molecules would be observed
D. All the above statements are correct

Answer

D