Watson and Crick Noted That DNA's Structure Is Interesting Because

Multiple Choice

Watson and Crick noted that DNA's structure is interesting because it suggested a possible copying mechanism. What about DNA's structure facilitates copying?

A) It has the same number of purines and pyrimidines.
B) The nitrogenous bases are located on the inside of the double helix.
C) The strands of the double helix are complementary.
D) DNA always goes from 5' to 3'.