Natural Selection Chapter 1 Flashcard

Front

What is a histogram?

Back

A graph that uses bars to show how characteristics of values are distributed within a group.

Front

Is yellow color always an adaptive trait in a yellow environment?

Back

False

Front

What determines which traits can become more common over many generations in a population?

Back

The traits that exist in a population.

Front

What can you infer about a population of newts from a histogram showing high poison levels?

Back

Most of the newts have high poison levels.

Front

How would you describe the traits of a population of butterflies with different wing colors?

Back

The population has different traits for wing color: some are yellow, some are orange, and some are black.

Front

What is natural selection?

Back

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

Front

What is an adaptive trait?

Back

A characteristic that enhances an organism's ability to survive and reproduce in its environment.

Front

What role does variation play in natural selection?

Back

Variation among individuals in a population is essential for natural selection to occur, as it provides the traits that may be favored.

Front

What is the significance of a population's traits in evolution?

Back

The traits present in a population influence the potential for those traits to become more common over generations.

Front

Can an environment change the adaptive value of a trait?

Back

Yes, changes in the environment can alter which traits are considered adaptive.