Homologous and Analogous Structures

Front

What is the process by which species change over time?

Back

Evolution

Front

What type of structures are inherited from a common ancestor?

Back

Homologous structures

Front

True or False: Homologous structures indicate a common ancestry between species.

Back

True

Front

What do humans, birds, whales, and lizards have in common regarding their arm bones?

Back

They have a common ancestor.

Front

What is the relationship between closely related organisms in terms of DNA?

Back

They have very similar DNA sequences.

Front

What are structures that serve similar functions but do not share a common ancestry called?

Back

Analogous structures

Front

Give an example of analogous structures in nature.

Back

Bird wings and butterfly wings.

Front

What is the significance of homologous structures in evolutionary biology?

Back

They provide evidence for common ancestry.

Front

How can scientists determine evolutionary relationships between species?

Back

By comparing homologous structures and DNA sequences.

Front

What is the main difference between homologous and analogous structures?

Back

Homologous structures arise from a common ancestor, while analogous structures do not.