FIRST EVENT. “A population happens to face new conditions (due to a change of their environment, either locally or due to migration, of food, or symbionts, etc.) and the organisms of this population accommodate to the new conditions via a physiological adjustment (as related to the trophic or behavioural change); this may change their gene expression profile, as it often does (without a change of genome, yet).”
https://lnkd.in/eS_4y_J