Evidence of Evolution

Front

What is it called when all of the organisms of a species have died?

Back

Extinction

Front

What does Darwin's theory of evolution suggest?

Back

Species change over time.

Front

What is a biological species?

Back

A group of interbreeding populations that is reproductively isolated from other groups.

Front

What is an example of a vestigial structure?

Back

The tailbone of a human.

Front

What is the term for the process by which species change over time?

Back

Evolution.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is adaptation in the context of evolution?

Back

A trait that helps an organism survive and reproduce in its environment.

Front

What is a fossil?

Back

The preserved remains or traces of an organism that lived in the past.

Front

What is the significance of homologous structures?

Back

They indicate common ancestry among different species.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures have a common evolutionary origin, while analogous structures serve similar functions but do not share a common ancestry.