Acertain species of flea feeds only on pronghorn antelopes. in the western united states, pronghorns and cattle often associate with one another in the same open rangeland. some of these fleas develop a strong preference for cattle blood and mate only with conspecifics found on cattle. if this situation persists, and new species evolve, this would be an example of

Sympatiric speciation and habitat isolation

Explanation:

Sympatric speciation happens when populations of a species that share the same habitat become reproductively isolated from each other.

For habitat isolation to occur, populations do not need to be separated by great distance. Instead, they must occupy different habitats, even within the same area. In this situation, some of the fleas have started to feed on a cattle instead of pronghorns like the others. They have also started mating with conspecifics found on the cattle thereby giving rise to a new species. This therefore shows Sympatiric speciation and habitat isolation.

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