NASA Scientists send a small population of dogs to a new planet in order to test if it will be hospitable for human colonization.Through a random lottery,only Great Dane and St.Bernard dog breeds are sent,and the resulting population consists of tall,longhaired dogs.After 100 years these dogs return to Earth and are no longer able to mate with Earth dogs.This scenario is an example of
A)allopatric speciation through genetic drift.
B)allopatric speciation through natural selection.
C)sympatric speciation through genetic drift.
D)sympatric speciation through natural selection.

Question

Quizplus · Accepted Answer

Allopatric speciation occurs when a population is divided into two or more geographically isolated groups. In this case, the dogs were sent to a new planet, which isolated them from the Earth dogs. Genetic drift is a random change in the frequency of alleles in a population. In this case, the genetic drift could have caused the dogs to become taller and longer-haired.

NASA Scientists Send a Small Population of Dogs to a New