Which of the following is TRUE of the trombone model of replication? Question 2 options: As Okazaki fragments are extended by Pol I, the loop in the DNA template grows. Binding of the polymerase core to a new primer/template complex triggers loading of the ? clamp. Once an Okazaki fragment is completed by Pol III, the ? clamp is ejected from the Pol III core. A loop is formed in one strand of the template DNA to allow 5'-3' synthesis of the leading strand. When a new ? clamp is loaded, primase is triggered to synthesize a primer.