Comparative Anatomy

Front

What are homologous structures?

Back

Structures in different species that are similar due to shared ancestry, even if they have different functions.

Front

What are analogous structures?

Back

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

Front

Give an example of homologous structures.

Back

The forelimbs of humans, birds, whales, and bats.

Front

What is the significance of homologous structures in comparative anatomy?

Back

They provide evidence for common ancestry among different species.

Front

What is a vestigial structure?

Back

A structure that has lost most or all of its original function through the course of evolution.

Front

Provide an example of a vestigial structure in humans.

Back

The human appendix.

Front

What is the main reason for the similarity in arm bones of humans, birds, and whales?

Back

They have a common ancestor.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures arise from a common ancestor, while analogous structures arise independently in different species.

Front

What is comparative anatomy?

Back

The study of similarities and differences in the anatomy of different species.

Front

Why are bat wings and butterfly wings considered analogous structures?

Back

They serve the same function (flight) but evolved independently in different species.