In the meselson-stahl experiment, bacteria were grown in medium containing 15n and were then transferred to medium containing 14n. after three rounds of dna replication, in 14n. how many bands would you expect?

In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia