Final answer:
After several nucleotides have been added to the G-rich strand during telomere synthesis, telomerase extends the 3' end of the template strand, allowing for the synthesis of an extra Okazaki fragment.
Step-by-step explanation:
After several nucleotides have been added to the G-rich strand during telomere synthesis, telomerase shifts to the right and extends the 3' end of the template strand. This extension allows for the priming, synthesis, and ligation of an 'extra' Okazaki fragment from the extended template strand. This process helps maintain the length of the telomeres and prevents the shortening of the DNA strands during replication.