4. For a science fair project, two students decided to repea…
4. For a science fair project, two students decided to repeat the Alfred Hershey and Martha Chase bacteriophage virus experiment, with some modifications. They decided to label the nitrogen of the DNA, rather than the phosphate. They reasoned that each nucleotide has only one phosphate and two to five nitrogen within the nitrogenous bases. Thus, labeling the nitrogen would provide a stronger signal than labeling the phosphates. Why won’t this experiment work?