DNA replication is
A)conservative.
B)semiconservative.
C)dispersive.
D)both semiconservative and dispersive.

Question

Quizplus · Accepted Answer

DNA replication is semiconservative, meaning that each newly synthesized DNA molecule consists of one parental strand and one newly synthesized strand. This was demonstrated by the classic Meselson-Stahl experiment in which bacteria were grown in a heavy isotope of nitrogen and then transferred to a lighter isotope. The resulting DNA molecules were then analyzed for their density, revealing that the DNA replication was semiconservative. The conservative and dispersive models were proposed but were later ruled out by experimental evidence.

DNA Replication Is