Evidence of Evolution

Front

What is an example of a structure that is similar in function but not in structure?

Back

Analogous structure

Front

What do we call structures that are similar in structure but not in function?

Back

Homologous structures

Front

What is the term for the collection of life's remains found in sedimentary rock?

Back

The fossil record

Front

What is the process known as when a new species is formed?

Back

Speciation

Front

Which layer of rock is typically the youngest in a geological formation?

Back

The top layer (Layer 1)

Front

What are vestigial organs?

Back

Structures that have lost most or all of their original function through evolution.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is microevolution?

Back

Small-scale evolutionary changes within a species over time.

Front

What is gradualism in evolution?

Back

The theory that evolution occurs slowly and steadily over long periods of time.

Front

What is punctuated equilibrium?

Back

The theory that evolution occurs in rapid bursts followed by long periods of stability.