Term
|
Definition
| Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms. |
|
|
Term
|
Definition
| Well-tested explanation that unifies a broad range of observations. |
|
|
Term
|
Definition
| Preserved remains or evidence of an ancient organism. |
|
|
Term
|
Definition
| Selection by humans for breeding of useful traits from the natural variation among different organisms. |
|
|
Term
|
Definition
| Competition among members of a species for food, living space, and the other necessities of life. |
|
|
Term
|
Definition
| Ability of an organism to survive and reproduce in its environment. |
|
|
Term
|
Definition
| Inherited characteristic that increases an organism's chance of survival. |
|
|
Term
|
Definition
| Process by which individuals that are better suited to their environment survive and reproduce most successfully (natural selection). |
|
|
Term
|
Definition
| Process by which individuals that are better suited to their environment survive and reproduce most successfully (survival of the fittest). |
|
|
Term
| Descent with Modification |
|
Definition
| Principle that each living species has descended, with changes, from other species over time. |
|
|
Term
|
Definition
| Principle that all living things have a common ancestor. |
|
|
Term
|
Definition
| Structure that has different mature forms in different organisms but develops from the same embryonic tissues. |
|
|
Term
|
Definition
| Organ that serves no useful function in an organism. |
|
|
Term
|
Definition
| He made many observations and collected evidence that led him to propose a hypothesis about the way life changes (evolution). |
|
|
Term
|
Definition
| He published a hypothesis of the inheritance of acquired traits. His ideas were flawed, but he was one of the first to propose a mechanism explaining how organisms change over time. |
|
|
Term
|
Definition
| Combined genetic information of all the members of a particular population. |
|
|
Term
|
Definition
| Form of natural selection in which the entire curve moves; occurs when individuals at the upper and lower ends of a distribution curve have higher fitness than individuals hear the middle. |
|
|
Term
|
Definition
| Form of natural selection by which the center of the curve remains in its current position; occurs when individuals hear the center of a distribution curve have higher fitness than individuals at either end. |
|
|
Term
|
Definition
| Formation of new species. |
|
|
Term
|
Definition
| Separation of species or populations so that they cannot interbreed and produce fertile offspring. |
|
|
Term
|
Definition
| Form of reproductive isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding. |
|
|
Term
|
Definition
| Form of reproductive isolation in which two populations are separated physically by geographic barriers such as rivers, mountains, or stretches of water. |
|
|
Term
|
Definition
| Form of reproductive isolation in which two populations reproduce at different times. |
|
|
Term
|
Definition
| Process by which a single species or small group of species evolves into several different forms that live in different ways; rapid growth in the diversity of a group of organisms. |
|
|
Term
|
Definition
| Discipline of classifying organisms and assigning each organism a universally accepted name. |
|
|
Term
|
Definition
| Classification system in which each species is assigned a two-part scientific name. |
|
|
Term
| Evolutionary Classification |
|
Definition
| Method of grouping organisms together according to their evolutionary history. |
|
|
Term
|
Definition
| The study of evolutionary relationships among organisms. |
|
|
Term
|
Definition
| Characteristic that appears in recent parts of a lineage, but not in its older members. |
|
|
Term
|
Definition
| Diagram that shows the evolutionary relationships among a group of organisms. |
|
|
