What was revealed by the Griffith experiment, the Avery
experiment, and the Hershey Chase experiment as to the DNA of the
gene itself. Explain in order the points that these experiments
revealed.
6.) In the 1952 Hershey-Chase experiment showed that DNA is the
genetic material of bacteriophage. Explain where the protein
labeled with 35S ended up and where the DNA labeled with 32P ended
up after centrifugation in their experiment. a. Draw a diagram of
the experiment in support of your explanation. b. Is it possible to
do the reverse labeling? (protein labeled with 32P and DNA is
labeled with 35S) Why or why not?
7.) For each base-pair set, state if...
Describe how the Hershey-Chase experiment demonstrated that DNA
is the genetic material, not protein as previously thought. Explain
how they used radioactive isotopes and bacteriophages in their
experiment and summarize their conclusions.
In some critical experiments, Avery, MacLeod and McCarty
confirmed an important principle, essentially identifying DNA as
the genetic material. Their experiments used rough (R)
non-pathogenic bacteria, and pathogenic smooth (S) bacteria to show
that a cell-free bacterial extract of the S strain was capable of
converting the R strain to the S strain. What was this principle
called?
3.Explain the semiconservative model of DNA replication.
Describe the experiment that confirmed the model over the
conservative and dispersive models, and why the findings pointed
toward the semiconservative model.
1. Hershey and Chase conducted a classic experiment involving
bacteriophages. What could they have concluded if they had found
only 35S in their bacterial cells?
A. Protein and DNA together are the genetic material.
B. No conclusion is possible.
C. Protein is the genetic material.
D. DNA is the genetic material.
E. RNA is the genetic material.
2.
As unwinding of the helix occurs during DNA replication, tension
referred to...