An massive landslide decimates a ground squirrel population. Through random chance, the surviving population?

happens to have broader stripes on average than the initial population. If broadness of stripes is genetically determined, what effect has the ground squirrel population experienced during the earthquake?


A) a founder event


B) A genetic bottleneck


C) Disruptive selection


D) gene flowAn massive landslide decimates a ground squirrel population. Through random chance, the surviving population?
Genetic drift has occured and as a result of this, they have experiences a genetic bottleneck.





genetic bottleneck - chance effects on allele frequencies in a population as a result of a major reduction in population sizeAn massive landslide decimates a ground squirrel population. Through random chance, the surviving population?
A population bottleneck.


http://en.wikipedia.org/wiki/Population_bottleneck





While a founder effect is caused when a sub-population separates itself from the main population a population bottleneck results when the main population is decimated, with only a small remaining population.





The two have the same result (a small population causing random genetic trends) but with different causes.
google it upp