Question

Why did Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur?

a. DNA contains phosphorus and no sulfur.
b. Proteins contain phosphorus and no sulfur.
c. DNA contains sulfur and little phosphorus.
d. Proteins contain sulfur and little phosphorus.

Answer 1

Hershey and Chase label the viral DNA with radioactive phosphorous and not radioactive sulfur because DNA contains phosphorus and no sulfur.

Answer 2

The reason why Hershey and Chase labeled the viral DNA with radioactive phosphorous and not radioactive sulfur is because A) DNA contains phosphorous and no sulfur.