A particular riparian population of spiders described in the text displayed more variability in their behavior, e.g., more of the highly aggressive territorial behavior typical of desert spiders, than was usual for riparian spiders. This was because this population
A) experienced an abrupt shift in its environment.
B) had become geographically isolated from other riparian populations for a long time.
C) suffered from a mutation caused by pesticides.
D) was not completely isolated from a population of desert spiders.

Question

Quizplus · Accepted Answer

The presence of more aggressive territorial behavior, typical of desert spiders, in the riparian spider population suggests interaction or genetic mixing with desert spiders, indicating that they were not completely isolated from a population of desert spiders.

A Particular Riparian Population of Spiders Described in the Text