Background: Speciation requires isolation + natural selection in order to happen. Isolation is the separation of some individuals in a population from another group of individuals in the population. There are different types of isolation.
Task: Watch this video about speciation from the Amoeba Sisters to build your understanding of speciation.
Q. One way two groups can be isolated is from temporal isolation. In this type of isolation, the two groups do not mate at the same time of day or time of the year. Which of the following is an example of temporal isolation?
a. Two species of flowers self pollinate at two different times of the year. One pollinates in early Spring: the other in late Summer.
b. Female fireflies will only respond to the signals flashed by their own species, preventing them from mating with other closely related firefly species.
c. Two species of plants can be found in a pond ecosystem. One floats on the surface of the pond; the other grows on the pond floor.
d. An earthquake causes the ground to open up; leaving members of a herd stranded on opposite sides of the opening.