Natural Selection

Front

Most organisms have more offspring than will survive.

Back

True

Front

Change in a population over time that descends from a common ancestor.

Back

Evolution

Front

Definition: adaptation

Back

Inherited characteristic that increases chances of survival.

Front

Which organisms are most likely to survive?

Back

The best adapted.

Front

Due to pollution, a pond becomes darker over time. Which trait variation became more common?

Back

Dark fish.

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 the role of variation in natural selection?

Back

Variation provides the raw material for natural selection to act upon.

Front

What is a common misconception about evolution?

Back

That evolution is a linear process leading to 'better' organisms.

Front

What is the significance of genetic diversity in a population?

Back

Genetic diversity increases the chances of survival and adaptation to changing environments.

Front

What is selective pressure?

Back

Any external factor that affects an organism's ability to survive in a given environment.