Replication forks hold the two separated strands of DNA apart preventing them from assuming their double helic shape.
A replication fork is the mechanism by which a strand of DNA is synthesized. If you can imagine a strand of DNA unwound, then it would resemble a ladder. Unzip the DNA and it now looks like a fork,...
Multiple replication forks working in concert, can be replicated in about 8 hours
Your mom helps it speed it up because it needs to go make dinner for it :D