Zerobot
From WikiManual
A zerobot sim (sometimes called ex nihilo) starts using a bot with as little information as possible. Traditionally these bots would contain all zeros. An example:
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Zerobots do not replicate at first. Eventually point mutations will create a replicator, and natural selection may start. It takes several million cycles for the first replicators to appear. Best results from ex nihilo sims usually require constant tinkering.