1) During the 1950's, several scientists were responsible for discovering the structure of DNA. One scientist, Erwin Chargaff, found that in DNA, the ratios of adenine (A) to thymine (T) and guanine (G) to cytosine (C) are always equal. What does Chargaff's discovery indicate about the structure of DNA and its impact on replication? All BUT ONE choice could apply.

A.)Adenine pairs with thymine; guanine with cytosine.
B) The base pairing facilitates DNA replication and RNA transcription. Eliminate
C) When pairing nucleotides, you must pair a purine with a pyrimidine.
D) If we read the sequence of nucleotides on one strand of DNA, we can identify the complementary sequence on the other strand.