Exam 7: Darwinian Evolution

Comparing the body structures of organisms to find evidence of a shared evolutionary history is called ________.

Which of the following is evidence for evolution in action?

Apples that we find in the grocery store today are much larger and sweeter than those found in the wild hundreds of years ago.Which process is responsible for this change?

Despite an abundance of habitat, why will it be difficult for the human species to recover?

Which process of evolution does not change the total number of species?

How old is our planet Earth?

What term describes the failure of one species' sperm to fertilize the egg of a different species?

What field of science has as its goal to classify all living things into a hierarchical system of relatedness that runs from most broad to most narrow?

What events can lead to offspring having a unique arrangement of their parents' genes?

What defines a population in evolution?

Some of the "branches" of a phylogenetic tree do not extend to the end.What do these lines represent?

Evolution can be best defined as ________.

The eastern meadowlark and the western meadowlark are two bird species that look very similar to each other.Why do biologists not consider them the same species?

The slow drifting of sections of the earth's crust, sometimes separating, other times colliding, is known as ________.

Which grouping includes all of the protists?

Which of the following are examples of macroevolution?

What is the name for the study of the geographic distribution of species?

What is radiometric dating?

Natural selection acts on ________, and ________ evolve.

Today, we are in the ________ geologic era.