Indicate which of the following statements is TRUE. Select all that apply. There are three phosphates between each sugar in a molecule of DNA. All organisms contain DNA that is roughly 25% A, 25% T, 25% G, and 25% C. There are two hydrogen bonds between AT pairs. Ribose sugars have a hydroxyl on the 2' carbon. A-, B-, and Z-form DNA are all right-handed helixes.