Exam 13: Adaptation and Species

Some freshwater snail eggs are accidentally introduced into a new habitat that is geographically isolated from the original population.Which of the following must occur before these snails are described as two separate species?

Genetic adaptations in two closely related species living within the same territory indicates that

Identify whether a type of reproductive barrier is prezygotic or postzygotic. -mechanical isolation

Two species evolving together in response to interactions between the two species is referred to as ________.

Which of the following is an example of a postzygotic barrier?

Which of the following statements gives an example of coevolution?

In many predator-prey relationships,evolutionary change in the prey will result in evolutionary change in the predator,a phenomenon known as

Explain how a change in the depth,either a lengthening or shortening,of flowers that contain nectar eaten by a particular species of hummingbird would potentially lead to a change in the hummingbird.

Two species live near each other but do not respond to each other's courtship displays.This is an example of ________ isolation,a type of prezygotic barrier.

Determine the type of reproductive barrier described in each statement. -The gametes of sea urchins living on a reef together are incapable of fusing.

Which of the following is an example of a prezygotic barrier that can isolate two species living in the same geographic area?

Two birds that are similar in morphology and live in the same forest exhibit different courtship behaviors.Which of the following describes the relationship of these birds?

Using the biological species concept as a method of defining a species is NOT useful for

Two populations of ________ are NOT an example of speciation.

Summarize how genetic divergence between two populations leads to reproductive barriers that isolate species living in the same area.Give specific examples of the barriers produced.

The two squirrel species shown in the figure below arose from the same ancestor.The Kaibab squirrel lives on the north rim of the Grand Canyon and the Abert's squirrel lives on the south rim.Which is the MOST likely explanation for their speciation?

Match each numbered statement to one of the terms listed below. -process of evolution through natural selection

Two birds with distinct differences in their plumage successfully mate and produce viable,fertile offspring.Using the biological species concept,explain whether these two birds would be defined as a single species.Also address whether you would require more information to make this determination.

Two populations that live ________ do NOT provide an example of geographic isolation.

Sympatric speciation