Meselson and Stahl's experiments proved that DNA replicates by which mode? a. conservative b. se

step 1 So the experiments show that DNA replication adopted this model of semi -conservative. So let me

Meselson and Stahl's experiments proved that DNA replicates...

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Key Concepts

DNA Replication

DNA replication is the process by which a cell makes an exact copy of its DNA, ensuring that genetic information is accurately transmitted during cell division. This process involves the unwinding of the double helix and the synthesis of new complementary strands based on the template provided by the original strands.

Semi-Conservative Replication

Semi-conservative replication describes the mechanism by which DNA is replicated such that each resulting double helix contains one original parental strand and one newly synthesized strand. This model ensures the preservation of the original genetic information, with one strand serving as a template for the creation of new complementary strands.

Meselson-Stahl Experiment

The Meselson-Stahl experiment was a critical study that provided strong evidence for semi-conservative DNA replication. By using isotopic labeling of nitrogen in the DNA and performing density gradient centrifugation, the experiment demonstrated that each new DNA molecule comprises one old and one new strand, thereby refuting alternative models like conservative and dispersive replication.

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