In the Hershey-Chase Experiments,the Radioactive Tracers 32P and 35S Were

Multiple Choice

In the Hershey-Chase experiments,the radioactive tracers 32P and 35S were used to track DNA and protein,respectively,because _____.

A) bacterial DNA contains sulfur and viral DNA contains phosphorus
B) viral DNA contains sulfur and bacterial DNA contains phosphorus
C) only DNA contains phosphorus and only protein contains sulfur
D) DNA has more sulfur than protein, and protein has more phosphorus than DNA
E) protein has more sulfur than DNA, and DNA has more phosphorus than protein