Answer:
The DNA helicase comes and splits the hydrogen bonds that are holding them together which allows DNA primase and DNA Polymerase (3) to come and replicate the strands from 5' to 3'. Then both strands have half of the old and half of the new, and have a collected 2 double-helical structures, which means there is technically 1 copy.
Hope this helps!
Step-by-step explanation: