Evidence of Evolution

Structures that are inherited from a common ancestor are homologous.

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

Bird wings and butterfly wings are an example of

Evolved from the same ancestor, but have different functions

Evolved from different ancestors, but due to living in similar environments have a similar function.

Penguin flipper and fish fin

Why do humans, birds, whales, and lizards have similar arm bones?

An anatomical feature that no longer seems to have a purpose in the current form of an organism

What type of structure? Options: Homologous, Analogous, Embryological, Vestigial

What type of structure? Options: Homologous, Analogous, Embryological, Vestigial