The Phenomenon of Fusion Is Likely to Occur When, After

Multiple Choice

The phenomenon of fusion is likely to occur when, after a period of geographic isolation, two populations meet again and ________.

A) an increasing number of infertile hybrids is produced over the course of the next 100 generations
B) no reproduction occurs in the hybrid zone
C) an increasing number of viable, fertile hybrids is produced over the course of the next 100 generations
D) a decreasing number of viable, fertile hybrids is produced over the course of the next 100 generations