When a small populations' gene frequencies are changed drastically by chance alone it is called a genetic drift
A DUI; driving under influence
Te 2 species don't interbreed in view of temporal isolation. Transient detachment signifies 'disengaged in time,' so this is an instrument that keeps animal groups from mating since they breed at various circumstances. These distinctions can be a season of the day, season, or even unique years.
Function. I'm guessing it is