Which of the following does NOT provide an example of geographic isolation?
A) Two snail populations live in two valleys on opposite sides of a mountain range.
B) Two bird populations live on adjacent mountains with a narrow valley between them.
C) Two squirrel populations live on opposite sides of a wide, deep river.
D) Two fish populations live in different lakes.

Question

Quizplus · Accepted Answer

Geographic isolation refers to physical barriers that prevent two populations from interbreeding. In this case, option B describes two bird populations that live on adjacent mountains with a narrow valley between them, which does not provide a complete physical barrier between them. Therefore, it does not provide an example of geographic isolation.

Which of the Following Does NOT Provide an Example of Geographic