Natural Selection Ch 1 & 2 Review

Front

What happens when a predator begins hunting in a valley where antelope live?

Back

Antelope with brown fur color will live longer and have more offspring.

Front

What is a characteristic that helps an organism survive in its environment?

Back

Adaptive trait.

Front

What is a characteristic that makes it less likely for an organism to survive?

Back

Non-adaptive trait.

Front

What does natural selection change over time?

Back

Populations of organisms.

Front

What will happen to green ostrilopes in a population?

Back

Green ostrilopes will survive longer and have more offspring.

Front

Define natural selection.

Back

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is an example of an adaptive trait in animals?

Back

Camouflage, which helps them avoid predators.

Front

What is the opposite of an adaptive trait?

Back

Non-adaptive trait.

Front

How does natural selection affect genetic variation in a population?

Back

It increases the frequency of beneficial traits and decreases the frequency of harmful traits.

Front

What role does mutation play in natural selection?

Back

Mutations can introduce new traits that may be beneficial, neutral, or harmful.