Fossils and Comparative Anatomy

Front

What is comparative anatomy?

Back

The study of similarities and differences among structures of living species.

Front

What is a cast fossil?

Back

A fossil copy of an organism in a rock.

Front

What are homologous structures?

Back

Body parts of organisms that are similar in structure and position but different in function.

Front

What are the three structures of comparative anatomy?

Back

Homologous structures, analogous structures, and vestigial structures.

Front

What are analogous structures?

Back

Body parts that perform a similar function but differ in structure.

Front

What are vestigial structures?

Back

Various cells, tissues, and organs in a body which no longer serve a function.

Front

Give an example of homologous structures.

Back

The forelimbs of humans, whales, and bats.

Front

What is the significance of fossils in understanding evolution?

Back

Fossils provide evidence of how species have changed over time.

Front

What is a mold fossil?

Back

An impression of an organism in a rock.

Front

What is a trace fossil?

Back

Preserved evidence of the activity of an organism.