Final answer:
In the student DNA workshop, the focus is on DNA as the genetic material and the use of DNA testing to reveal precise genetic relationships. Hershey and Chase's experiments with bacteriophages provided crucial evidence that DNA, not protein, is responsible for carrying genetic information.
Step-by-step explanation:
The student DNA workshop described in the film likely refers to an educational activity where students are exposed to concepts regarding genetic material and DNA testing. Prior to DNA testing, there would have been assumptions made about genetic relationships based on physical characteristics, family history, or other phenotypic traits. However, with the advent of DNA testing, precise genetic relationships can be determined.
Regarding the Hershey and Chase experiments, these were pivotal in proving that DNA is the genetic material. They used bacteriophages, viruses that infect bacteria, and tagged the DNA with radioactive phosphorus and the protein with radioactive sulfur. Since only the radioactive phosphorus entered the bacteria, they concluded that DNA must carry the genetic information, not protein.
This experimentation and understanding of DNA as heritable information align with the learning objectives and competencies outlined for students studying biology. Specifically, the ability to evaluate scientific explanations, construct explanations that use the structure of DNA, and justify selections from historical investigations that support DNA's role in heredity.