question_answer

Given diagram depicts the experiment of Meselson and Stahl. Identify the type of isotopic DNA formed after 40 minutes {A, B, C and Z)).

A) \[A{{-}^{14}}N-DNA,\text{ }B{{-}^{15}}N-DNA,\text{ }C{{-}^{14}}N-DNA,\text{ }D{{-}^{15}}N-DNA\]

B) \[A{{-}^{14}}N-DNA,\text{ }B{{-}^{15}}N-DNA,\text{ }C{{-}^{14}}N-DNA,\text{ }D{{-}^{14}}N-DNA\]

C) \[A{{-}^{14}}N-DNA,\text{ }B{{-}^{14}}N-DNA,\text{ }C{{-}^{15}}N-DNA.\text{ }D{{-}^{15}}N-DNA\]

D) \[A{{-}^{14}}N-DNA,\text{ }B{{-}^{15}}N-DNA,\text{ }C{{-}^{15}}N-DNA,\text{ }D{{-}^{15}}N-DNA\]