lesson 5 topic 3 Other evidence of Evolution

Front

What is evolution?

Back

Evolution is the change in the heritable characteristics of biological populations over successive generations.

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What are fossils?

Back

Fossils are the remains or evidence of once-living organisms.

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What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed rock layers, the oldest rocks are at the bottom and the youngest are at the top.

Front

What are analogous structures?

Back

Analogous structures are structures in different species that have the same function but are not derived from a common ancestor.

Front

What is a cladogram?

Back

A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

Front

What is a common ancestor?

Back

A common ancestor is a species from which two or more different species have evolved.

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What is natural selection?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What is a vestigial structure?

Back

A vestigial structure is a body part that has lost its original function through evolution.

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What is the significance of transitional fossils?

Back

Transitional fossils provide evidence for the evolutionary process by showing intermediary forms between different species.

Front

What is genetic variation?

Back

Genetic variation refers to the differences in DNA among individuals within a population.