Download 12.1 Identifying the Substance of Genes

Biology Genetics
Chapter 12 Section 1: Identifying the Substance of Genes
Name:
[9] SC1.1 recognizing that all organisms have chromosomes made of DNA and that DNA
determines traits
[11] SC1.1 relating the structures of DNA to characteristics of an organism
Vocabulary: Define the following in your own words.
Transformation:
Bacteriaphage:
KEY CONCEPTS
1. Read the section on Griffith’s Experiments and Transformations. Write a short summary
of the experiment. (10 points)
2. How did Oswald Avery determine that DNA was responsible for transforming the
harmless bacteria in Griffith’s experiment?
3. What evidence was there from the Hershey – Chase Experiment that DNA was the
genetic material that infected the bacteria?
4. What are the three main roles of DNA in heredity?