An earthquake decimates a ground-squirrel population, killing 98% of the squirrels. The surviving population happens to have bro
ader 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. directional selection b. disruptive selection c. a founder event d. bottleneck effect
A bottleneck effect occurs when a large population of a species suddenly decreases in size due to some type of natural disaster like tsunami, earthquake, volcanic eruption, etc. This is a type of extreme genetic drift because in this many allele which was present in the old larger population might lost and the new population has less allele than previous population.
So here 98% of the population died in the earthquake and the remaining population has broader stripes on average than the initial population therefore here the squirrel population experienced bottleneck effect.
a glaciers way combined with its gradual movement can drastically are we shaped the landscape over hundreds or even thousands of years the icy roads the land surface and carries a broken rocks and soil temperatures far from their original places
The population would decrease because the high death rate and low other rates would lead to more deaths than births, and not many other people would be entering the country/place, so the population would decrease
