Evidence of Evolution

Front

What does Darwin's theory of evolution suggest?

Back

Species change over time.

Front

What do scientists compare to support the theory that all species share a common ancestor?

Back

DNA.

Front

What is a biological species?

Back

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

Front

What are subspecies?

Back

Populations of the same species that differ genetically because of adaptation.

Front

Which species’ DNA is most similar to the DNA of the toothed whale?

Back

Baleen Whale.

Front

What is the significance of fossil evidence in evolution?

Back

Fossils provide a record of past life forms and show changes over time.

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 a common ancestor?

Back

An ancestral species from which multiple species have evolved.

Front

What is genetic variation?

Back

Differences in DNA among individuals within a species.

Front

What role do mutations play in evolution?

Back

Mutations introduce new genetic variations that can lead to evolutionary changes.