Analogous and Homologous

Front

What are analogous structures?

Back

Structures that have a similar function but different evolutionary origins.

Front

Why do analogous structures not indicate a close evolutionary relationship?

Back

Because they arise from different genetic backgrounds.

Front

What is an analogous structure?

Back

A structure that serves the same purpose, but is not made in the same way.

Front

What is a homologous structure?

Back

Structures in different species that have a common ancestor and are similar in anatomical structure.

Front

What is the main difference between analogous and homologous structures?

Back

Analogous structures have similar functions but different origins, while homologous structures have similar anatomical structures and a common ancestor.

Front

Can you give an example of analogous structures?

Back

Wings of bats and wings of insects.

Front

Can you give an example of homologous structures?

Back

The forelimbs of humans, whales, and bats.

Front

What is convergent evolution?

Back

The process where organisms from different evolutionary backgrounds develop similar traits.

Front

What is divergent evolution?

Back

The process where related species evolve different traits due to different environments.

Front

What is a vestigial structure?

Back

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