Homologous, Analogous, Vestigial

Front

What are vestigial structures?

Back

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

Front

What are analogous structures?

Back

Organs or features in different species that have a similar function but evolved separately.

Front

What are homologous structures?

Back

Physical features shared by different species that indicate a common ancestry.

Front

Give 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 for common ancestry.

Front

What is the difference between homologous and analogous structures?

Back

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

Front

What is an example of a homologous structure?

Back

The forelimbs of humans and the forelimbs of apes.

Front

Why are vestigial structures considered evolutionary leftovers?

Back

They are remnants of features that were functional in ancestral species.

Front

How do analogous structures challenge the idea of common ancestry?

Back

They show similar functions without shared evolutionary origins.

Front

What role do homologous structures play in supporting the theory of evolution?

Back

They indicate evolutionary relationships among species.