Imagine two populations descended from a single bird species. After a period of isolation in allopatry, the populations resume inhabiting the same region. Assuming that the only differences between the populations are those listed, which of the following factors would most likely prevent interbreeding?

+2 votes

 

  

Population A forages by picking insects off leaves; population B forages by tearing open ant nests and eating the ants.

  

Population A rests in the upper branches of trees during foraging bouts; population B rests on the ground.

  

Population A nests in oak trees; population B nests in maple trees.

  

Population A performs its mating calls in the upper branches of trees; population B performs them on the ground.

 

asked Dec 28, 2012 in Biology by anonymous
    

1 Answer

+1 vote

 

Population A performs its mating calls in the upper branches of trees; population B performs them on the ground.

 

answered Dec 28, 2012 by Ytwsa ~Expert~ (1,092 points)

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