Practice question
Question
Which of the following causes a decrease in Tm?
Explanation
Increasing AT content correctly describes the effect or change asked about in this question. In DNA, understanding cause-and-effect relationships is essential for predicting biological outcomes. Increasing AT content occurs because of specific molecular interactions, thermodynamic principles, or regulatory mechanisms that govern this biological process. The other options (Increasing GC content, Increasing ionic strength, and Decreasing pH) describe either opposite effects, effects that occur under different conditions, or changes associated with unrelated processes.