Unit 7: Evolution

Front

What is the process in which organisms gradually change over time?

Back

Evolution

Front

What are ostrich wings an example of?

Back

Vestigial structures

Front

What do two closely related organisms have in common?

Back

Very similar DNA sequences

Front

What is the pattern of evolution where one species becomes many species after a natural disaster?

Back

Adaptive radiation

Front

What is the term for the evolution of flowers that mimic bees to attract them for pollination?

Back

Coevolution

Front

What are homologous structures?

Back

Anatomical features in different species that share a common ancestry.

Front

What is the significance of genetic variation in evolution?

Back

It provides the raw material for natural selection.

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 convergent evolution?

Back

The process where unrelated species develop similar traits due to similar environmental pressures.

Front

What is divergent evolution?

Back

The process where two or more related species become more dissimilar over time.