Biology 189 Final Exam Practice

The theory of natural selection states that:

A population of deer was threatened with overpopulation until cheetahs were imported. After a couple of years, there were fewer deer, but the average running speed of the deer had increased. This is an example of:

What mechanism did Charles Darwin discover as the driving force behind evolution?

Who believed the species on Earth changed over time as a result of periodic great catastrophes?

The long neck of a giraffe has developed over a long period of time because giraffes have needed to stretch their necks to reach food high in trees, and that quality has been passed on through the generations. This view of evolution would correspond with the ideas of:

Many commercial pesticides become less effective after two to three years because:

A population is:

The gene pool for a particular gene would include:

What is the difference between microevolution and macroevolution?

As world travel becomes easier and human populations intermix, the occurrence of what phenomenon will probably decrease?

Shrews have been documented to travel across frozen lakes and establish populations on previously uninhabited islands; thus, the shrews have a limited gene pool. If this limited gene pool has allele frequencies that are very different from the allele frequencies found in the original population, then this would be an example of:

Imagine a population of monkeys in South America whose habitat has been reduced to the point where only 25 monkeys survive. This is an example of:

How successful an individual is at passing on its genes to the next generation is known as:

The biological species concept cannot be applied to bacteria because:

Which of these definitions of species most closely fits the biological species concept?

A population of mountain-dwelling salamanders migrates and splits into two populations separated by a valley they can not cross. The speciation process that may occur is:

A population becomes isolated from other populations of the same species, and then genetic divergence occurs that prevents them from breeding with other populations. What has happened?

The many species of tree frogs that inhabit forests in the eastern United States maintain their genetic isolation from other species by several mechanisms, including "singing" slightly different songs. Which type of isolating mechanism does this represent?

Pollen of one plant species will not germinate on the flower of another species. This is an example of:

When a species invades a new habitat and evolves rapidly into several new species, what has occurred?

In an organism's binomial scientific name, the first of the two names is the

Analogous features in different organisms have nothing to do with common descent. These are produced by:

You discover a single-celled organism that does not have a nucleus, and you also notice that the culture is producing methane. In which group would you place this organism?

The evolution of land organisms was not possible until enough ________ had been made by the early forms of aquatic life.

Which aquatic vertebrates are thought to be the ancestors of the amphibians?

Primates first appear in the fossil record in the:

The amniotic egg first appeared in which group of animals?