Passage: A research team investigated the efficiency of PCR…
Passage: A research team investigated the efficiency of PCR (Polymerase Chain Reaction) using DNA polymerase from different organisms. They tested DNA polymerase from Escherichia coli (functions optimally at 37°C) and Thermus aquaticus (functions optimally at 72°C). PCR requires repeated heating cycles: denaturation at 95°C, annealing at 55°C, and extension at 72°C. After PCR amplification, the team used gel electrophoresis to separate the DNA fragments and measure the amount of DNA produced. Screenshot 2025-12-03 140257.jpg Screenshot 2025-12-03 140316.jpg Screenshot 2025-12-03 140338.jpg Based on the data presented in Figures 1 and 2, which statement best explains why Thermus aquaticus DNA polymerase is preferred for PCR over E. coli DNA polymerase?