Question

in the meselson - stahl experiment, three potential models of dna replication were tested. cells were grown in heavy nitrogen (n15), which incorporated into the bases (generation 0). the cells were then switched to medium that contained light nitrogen (n14) and allowed to replicate two times (generation 1 and 2). which model(s) of dna replication were consistent with the band pattern they saw in the tube in generation 1? dispersive and semiconservative dispersive conservative semiconservative conservative and semiconservative

Explanation:

In the Meselson - Stahl experiment, in Generation 1, the dispersive and semiconservative models predicted a single intermediate - density band. The conservative model would predict two distinct bands (one heavy and one light). So, the dispersive and semiconservative models were consistent with the band pattern seen in Generation 1.

Answer:

A. Dispersive and Semiconservative