The Bistable Switch

A bistable switch is like a toggle that can rest in two stable states, such as "on" or "off." In biological systems, it controls processes by maintaining a cell or molecule in one of these two states until a specific signal causes it to switch to the other. Once switched, it stays in that state until another signal prompts a change. This mechanism helps cells make clear, decisive decisions—like committing to division or differentiation—by ensuring the process remains stable until intentionally changed.