@Tuktuk Rahman alphas and omegas (subgenders, it doesn't matter if you're male or fen male) produce pheromones, their smell attracts the opposite subgender. In heat, an omega wants to sleep with an alpha and looses all sense and control over themselves. Same goes for alphas, but their "heat" is called rut. When and alpha marks an omega (biting into their neck) they will form a bond for life. They can no longer smell or react to pheromones other than their ppartners.If you got any more questions about omegaverse, feel free to ask, it's my fav genre