Question

The following concepts led to the hypothesis that DNA has a double helix structure:

I. The ratio of A:T is 1:1.
II. Deoxyribose is the sugar in DNA.
III. DNA strands are antiparallel

II and III

I II and III

II

I and II

I and III

Answer 1

I and III.

Chargaff's law and Rosalind Franklin's discoveries