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Term | Definition |
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cell | The basic unit of all living things except viruses. |
DNA | a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. |
stimulus | a thing or event that evokes a specific functional reaction in an organ or tissue. |
evolution | he process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth. |
natural selection | the process whereby organisms better adapted to their environment tend to survive and produce more offspring. |
artificial selection | is the intentional breeding of plants or animals. It means the same thing as selective breeding. |
extinction | the state or process of a species, family, or larger group being or becoming extinct. |
mutation | the action or process of mutating. |
homeostasis | he tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes. |
sexual reproduction | the production of new living organisms by combining genetic information from two individuals of different types |
asexual reproduction | is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes and almost never changes the number of chromosomes. |
variation | a change or difference in condition, amount, or level, typically with certain limits. |
adaptation | the action or process of adapting or being adapted. |
species | a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding. |