Foundations of Ecology and Evolution SPRING 2018-Form B A, Whih of the following

Question

Foundations of Ecology and Evolution SPRING 2018-Form B A, Whih of the following is an example of allopatric speciation? The Hawthorne maggot fly l its eggs in the Hawthorne fruits. After the introduction of apple trees to the same area, some Hawthorne maggot flies begin laying their eggs in the apple fruits, As the two plants fruit at different times temporal isolation between the fly B) On the Island of Oahu, a species of the honeycreepe C) A squirrel population was divided into two groups because of the formation of populations has occurred millions of years through a combination of ecological and behavioral isolation. Canyon. Since that time, genetic changes have occurred and the two groups of squirrels r bird diverges into multiple species over the Grand are now reproductively isolated from one another o populations of fish are separated into small ponds. Over millions of years a river begins to flow joining the two ponds. When the two fish populations meet, they are able to E) Th ere is a mistake during meiosis resulting in diploid gametes instead of haploid gametes. The offspring is unable to reproduce with the parent species.

Explanation / Answer

B) The honeycreepers are example of allopatric speciation and demonstrates convergence. The species of honeycreepers have all evolved from a single species that had colonized an island. Those that came back to their native island were not capable of interbreeding with the natives anymore.

C) Allopatric speciation occurs when a species separate into two which are isolated from one another. When Arizon's Grand Canyon formed, the squirrels that had once been a part of single population could no longer interbreed with each other.

Hence B and C are examples of allopatric speciation.

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