When a recently impregnated female mouse encounters a male mouse other than the one with which she mated, the pregnancy may spontaneously abort. This effect of pheromones is called the ____________ effect.
A) Bruce
B) Lee-Boot
C) Whitten
D) Vandenbergh
E) Coolidge

Question

Quizplus · Accepted Answer

The Bruce effect refers to the phenomenon where a pregnant female mouse will spontaneously abort if she smells the urine of a male mouse that is not the father of her offspring. This is thought to be a strategy to avoid investing resources in offspring that might not be supported by the dominant male in the area.

When a Recently Impregnated Female Mouse Encounters a Male Mouse