In ancient greece, aristotle developed a system of classification which was used for the next 2000 years to describe relationships between living things. which of the following questions would be most difficult to answer based on aristotle's classification of living things?

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.