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Biology Study Cards
Evolution Study Cards
| Term | Definition |
|---|---|
| Homologous Structures | Body parts have same basic structure; suggests common ancestor; whale flipper and arm |
| Variations | Darwin noticed the members of the same species are different (variations), he did not explain source |
| Vestigial Structures | No function; eyes of blind mole, appendix of human, snake hipbones; suggests common ancestor |
| Appearance of Life on Earth | Inorganic --> Organic --> Self-replicating Molecules |
| Mutations | Adds new gene to gene pool. Source of variation among organisms. |
| Spontaneous Generation | Life from non-living. Pasteur disproved with flasks of broth. |
| Anaerobic Prokaryotes | Bacteria that live without oxygen; first living things on Earth |
| Stanley Miller | Designed a test that determined that amino acids and organic compounds could have formed on early Earth |
| Four Components of Natural Selection | Overproduction, Competition, Survival of the Fittest, Variations |
| Overproduction | Species produce many offspring to ensure that some are able to live and reproduce |
| Embryology | Suggests common ancestor. Embryos of fish, birds, reptiles, and mammals have gill slits |
| Biochemistry | Suggests similar ancestors. Share similar genetic codes, enxymes, proteins, etc. |
| Sources of Variation in Populations | Mutations, meiosis (formation of gametes), and sexual reproduction |
| Control Changed in Gene Pool | Natural Selection, Mutations, Migration, Isolation |
| Mimicry | Resembles poisonous or bad-tasting organism or resembles predator or autotroph (plant) |
| Camouflage | Blend in with surroundings |
| Isolation | Population is seperated; can lead to Speciation (new species is formed) and Reproductive Isolation (can no longer breed together) |