Match the researchers with their discoveries. Demonstrated the phenomenon of transformation, but did not identify the transforming principle. Answer 1 Identified DNA as the genetic material in bacteriophages. Answer 2 Determined the structure of DNA. Answer 3 First to isolate DNA. Answer 4 Demonstrated that changes in DNA and protein were colinear. Answer 5 Identified DNA as the transforming principle. Answer 6 Identified that DNA for yeast consisted of an equal amount of purines and pyrimidines.