Howard Hughes Medical Institute
Pulse Chase Primer: The Meselson-Stahl Experiment
Experimental design can make or break an experiment. Young scholars analyze the pulse-chase analysis procedure by studying the Meselson-Stahl experiment. Using a video presentation, they discover how the pulse-chase analysis led to the...
Curated OER
DNA: The Genetic Material
The various experiments and processes that were completed in the 20th century to further our understanding of DNA are summarized here. There are wonderful slides to popularize the scientists who dedicated their professional life to...
Curated OER
DNA Replication Worksheet
In this DNA activity, students determine why, when, and where DNA replication occurs. This activity has 7 short answer questions.
Cold Spring Harbor Laboratory
A Half DNA Ladder Is a Template for Copying the Whole
The experiment known as one of the most beautiful experiments in biology changed the way we think about DNA. Learn about the experiment and the scientists who designed it—as well as the scientists who built on the results—with an online...
Howard Hughes Medical Institute
Stem Cells and Diabetes
Students investigate stem cells. In this science lesson, students discuss stem cells and view a video about human embryonic development. Students conduct the pulse-chase.