Question

For each situation, indicate the type of speciation described.

Rabbits on one island have a colder climate then rabbits on another island. Over time, the two populations of rabbits become separate species.

      [ Choose ]            allopatric speciation            sympatric speciation      

Different environments on two sides of a barrier cause populations of beetles to diverge.

      [ Choose ]            allopatric speciation            sympatric speciation      

Hundreds of years ago true fruit flies in the America west coast only laid eggs on native hawthorns (a native apple tree), but today one group of true fruit flies lay eggs on hawthorns, and one group lay eggs on imported apples.

      [ Choose ]            allopatric speciation            sympatric speciation      

Nine species of treehoppers (plant-feeding insects) are believed to have diversified as a consequence of changes in plant hosts used for food.

      [ Choose ]            allopatric speciation            sympatric speciation      

In plants, new species may arise quickly due to multiplication of the entire complement of chromosomes.

      [ Choose ]            allopatric speciation            sympatric speciation      

Answer 1

1. Allopatric speciation (as the divergence occurred due to geographical barrier/condition)

2. Allopatric speciation (as the divergence occurred due to geographical barrier/condition)

3. Sympatric speciation (as the divergence occurred due to behavioral preferences)

4. Sympatric speciation (as the divergence occurred due to behavioral preferences)

5. Sympatric speciation (as the divergence occurred due to genetic changes)