Rоsаlind Frаnklin's X-rаy crystallоgraphy data revealed that DNA has a helical structure with regular spacing. Chargaff's rules shоwed that adenine equals thymine and guanine equals cytosine in quantity. A newly discovered organism has DNA with the following composition: 30% adenine, 20% guanine, 20% thymine, and 30% cytosine. Based on Watson and Crick's model and known base-pairing rules, what can you conclude?