Homologous, Analogous, Vestigial

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 perform similar functions but do not share a common ancestry.

Front

What are vestigial structures?

Back

Parts of an organism that are no longer needed for survival.

Front

How can you identify vestigial structures in different animals?

Back

By observing structures that have no apparent function and comparing them across species.

Front

What is an example of a homologous structure?

Back

The forelimbs of humans and the forelimbs of apes.

Front

What is an example of an analogous structure?

Back

Wings of a butterfly and wings of a bird.

Front

What is the significance of vestigial structures in evolution?

Back

They provide evidence of an organism's evolutionary past and adaptations.

Front

How do homologous structures support the theory of evolution?

Back

They indicate common ancestry among different species.

Front

What is the difference between homologous and analogous structures?

Back

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

Front

How can scientists use physical structures to infer evolutionary relationships?

Back

By analyzing the physical structures and their functions to infer common ancestry.