Characteristics that increase an organism’s ability to survive and reproduce. Can be body parts, color or behaviors.

Differences in organisms of the same species

Individuals with the average phenotype are better fit for the environment than the organisms with the extreme phenotypes.

Individuals with one extreme phenotype have higher fitness and have more offspring than individuals with the average phenotype or the other extreme phenotype.

BOTH groups of organisms with extreme phenotypes are better adapted and have more offspring than the average organisms.

Idea that living species are descended with changes over time, from common ancestors.

Structures inherited from ancestors that have lost much of the original size and function.

What type of selection is shown?

What type of selection is shown?

What type of selection is shown?

List, in order, the levels of the Linnaean classification system.

Which two levels of the classification system make up an organism's scientific name?

Which branch of biology is concerned with the naming and classifying of organisms?

What term refers to the two-part naming system used to assign each species a Latin-based scientific name?