Final answer:
No. The signal strands or open end fragments do not have P and N nucleotides. Okazaki fragments are synthesized on the lagging strand and are composed of short fragments of DNA.
Step-by-step explanation:
The signal strands, also known as open-end fragments, do not have P and N nucleotides.
Okazaki fragments, which are short stretches of DNA, are synthesized on the lagging strand in the direction away from the replication fork. They are composed of short fragments of DNA that are later joined together.
In contrast, the blunt ends resulting from the action of Pvull and HaeIII cleave both strands of DNA without unpaired bases.