If Escherichia coli,grown for a period of time in ¹⁵N,is transferred to ¹⁴N for one generation of DNA replication,the resulting DNA should have ¹⁴N added to all "new" DNA.If conservative replication is occurring,the ¹⁴N-containing "new" DNA will compose: A)one strand of all bacterial chromosomes. B)both strands of DNA in half of all bacterial chromosomes. C)regions dispersed throughout all bacterial DNA. D)none of the new DNA;it will only be found in the old DNA. E)All of the answer options are correct.

Question

Quizplus · Accepted Answer

Conservative replication means that the original DNA molecule is conserved, and a completely new molecule is synthesized. Therefore, if Escherichia coli is transferred to a medium with ¹⁴N for one generation, the new DNA (containing ¹⁴N) will be found in both strands of DNA in half of all bacterial chromosomes, as the other half will retain the original DNA strands.

If Escherichia Coli,grown for a Period of Time in 15N,is

If Escherichia Coli,grown for a Period of Time in ¹⁵N,is