Useful Animation on the Meselson-Stahl Experiment

I was working on my biology homework when I encountered a couple of questions concerning the Meselson-Stahl experiment that showed DNA replication is semi-conservative, which is to say that each strand of a DNA parent molecule is present in the daughter molecule, along with a freshly synthesized complementary strand.  Our textbook discussed it to some degree, but I still didn’t follow their explanation, so I went off in search of some supplementary instruction and found this link to a really well-made animation showing the steps that Meselson and Stahl went through on their way to showing that model of DNA replication proposed by Watson and Crick was indeed correct.

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