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 semiconservative 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)None of the answer options are correct.

Question

Quizplus · Accepted Answer

Semiconservative replication means that each new DNA molecule consists of one old strand and one new strand. Therefore, if E. coli is transferred to a medium with ¹⁴N for one generation, the new DNA synthesized in this medium will be found in one strand of all bacterial chromosomes, consistent with the semiconservative model of DNA replication.

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

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