Based on which of the following pieces of evidence about the transforming agent did Avery conclude that DNA is the hereditary material?
A. In an ultracentrifuge, the material migrated like DNA.
B. The purified material had the same elements as DNA.
C. The material was destroyed by DNA-digesting enzymes.
D. The material was not destroyed by protein-digesting enzymes.
E. All of the choices are correct.
Answer: E
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