According to Erwin Chargaff (1951) the ratio of A and "T is?

Adenine is double to Thiamine

Adenine equals to Thiamine

Thiamine is double to Adenine

None of these

According to Erwin Chargaff's 1951 findings, the ratio of adenine (A) to thymine (T) in DNA is approximately 1:1.

This means that for every adenine molecule, there is a corresponding thymine molecule.

This observation, along with the similar 1:1 ratio of guanine (G) and cytosine (C), forms the basis of Chargaff's rules.