Comparative Anatomy Review

Front

What are homologous structures?

Back

Structures in different species that share a common ancestry, even if they have different functions.

Front

What is biological evolution?

Back

The process by which species change over time through adaptations and natural selection.

Front

What are analogous structures?

Back

Structures in different species that have similar functions but do not share a common ancestry.

Front

What are vestigial structures?

Back

Body parts that have lost their original function through evolution.

Front

What is a common ancestor?

Back

An ancestral species from which two or more species have evolved.

Front

What is structural adaptation?

Back

A physical feature of an organism that enhances its survival in its environment.

Front

What is functional adaptation?

Back

A behavior or physiological process that enhances an organism's survival.

Front

What is the significance of homologous structures in evolution?

Back

They provide evidence for common ancestry and evolutionary relationships.

Front

How do analogous structures provide insight into evolution?

Back

They show how different species can evolve similar traits due to similar environmental pressures.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry; analogous structures do not.