Change Over Time Review

The millions of fossils that scientists have collected are call the fossil

Similar structures that related species have inherited from a common ancestor are called

In 1858, Alfred Russel Wallace and Charles Darwin proposed how evolution occurs.

Darwin made a number of important observations on the Hawaiian Islands.

Scientists infer that species with similar body structures and development patters have a

Natural selection explains how variations can lead to changes in a species.

A new species can form when a group gets separated from the rest of its family long enough.

During/after the Industrial Revolution, peppered moths were mostly

A natural catastrophe such as a river or volcano may separate group members.

The cow and the dog are separate species, unable to _____ with each other.

Scientists have found a great deal of evidence that supports Darwin's theory of

Scientists have developed three patterns to describe the rate of evolution.

Only the organisms with a desired characteristic are bred in

Before the Industrial Revolution, peppered moths were mostly

__________ is a pattern of new species evolving during short periods of rapid change.

The different shapes of bird beaks are examples of

Without variation, all members of a species would have the same traits.

________ is a pattern of new species forming over very long periods of time.

__________ occurs when some members of a species become cut off.

The preserved remains of an organism that lived long ago is a(n)

The fossil record shows patterns of gradualism over short periods of time.

Scientists compare _____ bases in DNA of different species to see how closely related they are.

Today scientists know that organisms are much less diverse than Darwin imagined.

Members of a species can mate with each other and produce

After the Clean Air Act, peppered moths were mostly

Scientists infer evolutionary relationships by comparing the early development of different

To understand how evolution might occur, Darwin studied wild animals and artificial selection.

In Darwin's book, The Population of Species, he said that evolution occurs by natural selection