However, when pressure for that one trait is let up, organisms in succeeding generations rapidly revert to the original type, much as if the genome has sprung back to its set point.

• 不过，当放松了那些针对这一性状的环境压力之后，生物体的后继世代能够迅速地回复原本的特质，基因组仿佛是弹回到了原点。