Discuss the various definitions of a species and the problems associated with each.

Origin of Species and Macroevolution

1.Discuss the various definitions of a species and the problems associated with each.

2.Differentiate between prezygotic and postzygotic reproductive isolating mechanisms.

3.Be able to define the different types of prezygotic isolating mechanisms (habitat isolation, temporal isolation,behavioral isolation, mechanical isolation, and gametic isolation) and be able to recognize and classify anyexample of prezygotic isolation as to which of these it represents.

4.Be able to define the different types of postzygotic isolating mechanisms (hybrid inviability, hybrid sterilityandhybrid breakdown) and be able to recognize and classify any example of postzygotic isolation as to which ofthese it represents.