okazaki fragments
"One way to consider the concepts of continuous versus discontinuous replication of DNA is in terms of obtaining tape from a role of tape. Sometimes you need a lot of tape and can unroll the tape as you adhere the tape. In this case, the tape essentially is applied as fast as it is unrolled and is being unrolled as fast as it is applied, though with each process occurring in slightly different locations."
A very clear explanation of DNA replication is in the link.
"As an analogy, imagine you are paving a highway that runs in two directions. You have machines that will pave the highway, but can only run in the direction of normal traffic flow. The two machines have to stay near each other. By running one constantly and having the other pave in the opposite direction, then moving the machine farther back and going until it meets the part it just paved, you get the same effect."
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.