Principles of Biology
Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 20, Problem 2CBQ

Discuss the type of speciation (allopatric or sympatric) that is most likely to occur under each of the following conditions:

  1. A pregnant female rat is transported by an ocean liner to a new continent.
  2. A meadow containing several species of grasses is exposed to a pesticide that promotes nondisjunction.
  3. In a very large lake containing several species of fishes. the water level gradually falls over the course of several years. Eventually, the large lake becomes subdivided into smaller lakes. some of which are connected by narrow streams.

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