Homologous & Analogous Structures Review

Front

What are homologous structures?

Back

Structures that are inherited from a common ancestor, showing similar anatomy but may serve different functions.

Front

What are analogous structures?

Back

Structures that serve similar functions in different species but do not share a common ancestor.

Front

True or False: Homologous structures indicate common ancestry.

Back

True

Front

True or False: Analogous structures show common ancestry.

Back

False

Front

What is natural selection?

Back

The process where individuals with favorable traits survive, reproduce, and pass those traits to their offspring.

Front

List the geologic time eras in order from oldest to most recent.

Back

Precambrian, Paleozoic, Mesozoic, Cenozoic.

Front

Give an example of homologous structures in animals.

Back

The forelimbs of humans, whales, and bats.

Front

Give an example of analogous structures in animals.

Back

The fins of sharks and the flippers of dolphins.

Front

What is the main difference between homologous and analogous structures?

Back

Homologous structures arise from a common ancestor; analogous structures arise independently in different species.

Front

What role does mutation play in evolution?

Back

Mutations introduce new traits that can be subject to natural selection.