Mechanisms of Evolution Review

A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population.

Genetic equilibrium exists in a population that is stable.  Which conditions would support genetic equilibrium within a species? (Think about the conditions to meet Hardy-Weinberg Equilibrium)

Yellow toucan birds seek out one another to make babies together and tend to avoid the green toucan birds.

The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces.  When the cow contributes to the gene pool of the new herd which of these most likely increases?

Bats are common in Texas, especially in rocky regions. Bats with longer hang claws have demonstrated higher fitness because of their ability to cling to rock while resting.

Lord Howe Island is a volcanic island in the Tasman Sea that is about 11 km long and 2.8 km wide.  The island has two species of palm trees, Howea forsteriana and the more abundant Howea belmoreana.  The two species do not interbreed even when they grow very close to each other.  Which evolutionary process fails to occur?

Wolves from the Arizona mesa were transferred to the Colorado Rockies after a forest fire destroyed their habitat. They quickly became part of the local pack and had offspring.

7 Wild Mustangs were taken from the prairies of Iowa after a Texan Rancher purchased them and provided them with their own pasture. Those 7 Mustangs eventually became 122.  This is an example of…

Two populations of mice living in the same forest are separated by a large water-filled ditch.  After a rainstorm, flooding brings several mice from one population to the other population.  When the mice from the first population reproduce with members of the second population, which of the following will likely occur?

What does the image represent?

What does the image represent?

What does the image represent?

What does the image represent?

The Isthmus of Panama is a narrow strip of land that lies between the Caribbean Sea and the Pacific Ocean.  It forms a land bridge that links North and South America.   The formation of this isthmus separated two bodies of water that had previously been connected.  How did the formation of this land bridge most likely influence the development of distinct marine species on either side of the land bridge?

Some pistol shrimp within a population do not have eye tissue pockets.  The eye tissue pockets cover their eyes for protection from the sound waves when they snap their large claw.  What role will natural selection most likely have in the frequency of the alleles responsible for the presence of tissue pockets in the shrimp population over time?