Question

Meselson and stahl cultured
e. Coli for several generations in a medium with a heavy isotope of nitrogen, 15n. They transferred the bacteria to a medium with a light isotope of nitrogen, 14 n. After two rounds of dna replication, half the dna molecules were light (both strands had 14n) and half were hybrids (15n-14n). What did the researchers conclude from these results?

Answer 1

Answer:

Semiconservative replication