Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Bio. SG Vocab.
| Question | Answer |
|---|---|
| Evolution | A heritable change in the characteristics within a population from one generation to the next |
| Autotroph | An organism that produces its own nutrients from inorganic substances or from the environment instead of consuming other organisms |
| Heterotroph | An organism that obtains organic food molecules by eating other organisms or their byproducts and that cannot synthesize organic compounds from inorganic materials |
| Overproduction | When more offspring can be produced than can survive to maturity |
| Genetic Variation | When individuals have different traits |
| Struggle To Survive | When individuals must compete with one another to survive, thus causing adaptations over time |
| Differential Reproduction | Populations begin to differ as they become adapted to different environments |
| Decent With Modification | All species descended from one or a few original kinds of life |
| Allopatric Speciation | When species arise as a result of geographic isolation |
| Sympatric Speciation | When two sub populations become re-productively isolated within the same geographic area |
| Species | A group of organisms that are closely related and can mate to produce fertile offspring |
| Convergent Evolution | The process by which unrelated species become more similar as they adapt to the same kind of environment |
| Divergent Evolution | The process by which two or more related but re-productively isolated populations become more and more dissimilar |
| Co-evolution | The evolution of two or more species that is due to mutual influence, often in a way that makes the relationship more mutually beneficial |
| Disruptive Selection | When two extreme forms of a trait are selected |
| Stabilizing Selection | When the average form of a trait is favored and becomes more common |
| Directional Selection | When the most extreme form of a trait is favored and becomes more common |
| Radioactive Isotope | An isotope that has an unstable nucleus and that emits radiation |
| Half-life | The time required for half of a sample of a radioactive isotope to break down by radioactive decay to form a daughter isotope |
| Cladogram | A diagram that's based on patterns of shared and derived traits and that shows the evolutionary relationships between groups of organisms |
| Gene Flow | The movement of genes into or out of a population due to interbreeding |
| Gradualism | A model of evolution in which gradual change over a long period of time leads to biological diversity |
| Catastrophism | The idea that sudden geologic catastrophes caused the extinction of large groups of organisms at certain points in the past |
| Punctuated Equilibrium | A model of evolution in which short periods of drastic change in species, including mass extinctions and rapid speciation, are separated by long periods of little or no change |
Created by:
archergirl
Popular Biology sets