g E. coli is grown in 15N containing media for several generations so that all of the DNA is 'heavy' and then grown for 2 generations in light (14N) media. What would be the proportion of heavy:hybrid:light DNA assuming conservative replication

the match duh

explanation:

for example, no new evidence will demonstrate that the earth does not orbit around the sun (heliocentric theory), or that living things are not made of cells (cell theory), that matter is not composed of atoms, or that the surface of the earth is not divided into solid plates that have moved over geological timescales .

what are the options? add them, then i will be glad to .