Natural selection

Front

What additional evidence did Darwin use to support his explanation of finch species evolution on the Galapagos Islands?

Back

The finch species lived in different habitats on different islands, which isolated them from one another.

Front

Which of the following best illustrates natural selection?

Back

An organism with favorable genetic variations will tend to survive and breed successfully.

Front

A species could go extinct if:

• food becomes more plentiful.
• members of the species have adaptations to enhance survival.
• the environment changes drastically and no one can adapt.
• there is less competition for resources.

Back

The environment changes drastically and no one can adapt.

Front

Does natural selection occur during the lifetime of a single organism?

Back

False

Front

What is most likely to happen to moth populations in the picture shown?

Back

Light moths--hunted easily, dark moths--population increase

Front

What word describes a trait that helps an organism survive in its environment?

Back

adaptation

Front

Why is the mouse population changing over time?

Back

The hawks eat more light mice than dark mice because they can see the light mice more easily.

Front

Do organisms "decide" to evolve and change?

Back

No, they change because of natural selection

Front

What is a trait?

Back

the quality or characteristic of an organism

Front

Why are advantageous traits more likely to be passed onto offspring?

Back

Because they are more likely to survive and reproduce.