Define artificial selection, and compare and contrast it with natural selection.

Summarize the key points of Darwin's theory of descent with modification, including his proposed mechanism of evolution.

True or false? Some traits are considered vestigial because they existed long ago.

What types of drugs have helped reduce the death rate due to tuberculosis infection, and why have they become less effective more recently?

What are three ways monosaccharides differ from one another?

Which of the following observations helped Darwin shape his concept of descent with modification?a. Species diversity declines farther from the equator.b. Fewer species live on islands than on the nearest continents.c. Birds live on islands located farther from the mainland than the birds' maximum nonstop flight distance.d. South American temperate plants are more similar to the tropical plants of South America than to the temperate plants of Europe.

Complete this concept map describing potential causes of evolutionary change within populations. a.b. c. d. e. f. g.

What type of bond is formed between two sugars in a disaccharide?a. glycosidic linkageb. phosphodiester bondc. peptide bondd. hydrogen bond

Which of the following observations is not part of the theory of natural selection?a. Populations of organisms have more offspring than will survive;b. There is variation among individuals in a population;c. Modern organisms are unrelated;d. Traits can be passed on from parent to offspring;e. Some variants in a population have a higher proba­bility of survival and reproduction than other variants do.