In a hypothetical situation, a certain species of flea feeds only on pronghorn antelopes. In rangelands of the western United States, pronghorns and cattle often associate with one another. If it should happen that some of these fleas develop a strong preference, instead, for cattle blood and mate only with fleas that, likewise, prefer cattle blood, it is possible that over time ________ will occur.
1. reproductive isolation
2. sympatric speciation
3. habitat isolation
4. prezygotic barriers
5. cladogenesis
A) 1 only
B) 2 and 3
C) 1, 2, and 3
D) 1, 2, 3, and 5
E) 1 through 5
Answer:
E) 1 through 5
1. reproductive isolation
2. sympatric speciation
3. habitat isolation
4. prezygotic barriers
5. cladogenesis
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