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there are three main types of barriers that cause members of a population to become separated from one another and begin the process of speciation. explain how each of these barriers isolates populations. use examples of each to reinforce your answer. finally, describe the last stage before total speciation occurs.

Isolation can be due to behavioral, geographical, or temporal barriers. Speciation can take place in two general ways. A single species may change over time into a new form that is different enough to be considered a new species. This process is known as anagenesis. More commonly, a species may become split into two groups that no longer share the same gene pool. This process is known as cladogenesis. There are several ways in which anagenesis and cladogenesis may take place. In all cases, reproductive isolation occurs. Hope this helps! 

Telophase colchicine is a chemical obtained from plants that prevents the assembly of spindle fibers