Conservative replication hypothesis

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In the early 1950s, scientists considered several different hypotheses about how DNA is replicated. One hypothesis, called conservative replication, was that the double-stranded parental DNA molecule is conserved intact but somehow directs the synthesis of a daughter DNA molecule consisting of two entirely new strands. Another hypothesis, semi-conservative replication, was that the two strands of the parental DNA separate and each acts as a template for the construction of a new strand, yielding two daughter molecules, that each have one old and one new strand. This hypothesis turned out to be correct. Assume you grow bacteria in a medium containing radioactive phosphorus, so all their DNA is labeled, and then you transfer them to a medium containing only nonradioactive phosphorus. After precisely one cell division in the nonradioactive medium, you test the bacterial DNA for radioactivity.


a. The results that would support the conservative replication hypothesis would be that:

Reference no: EM132337884

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