| A | B |
|---|
| Fossil | Evidence of an organism that lived long ago. |
| Plate Tectonics | The geological explanation for how the continents moved. |
| Spontaneous Generation | The idea that nonliving material can produce life. |
| Biogenesis | The idea that living organisms come only from other living organisms, became a cornerstone of biology. |
| Archaebacteria | Are prokaryotes that live in harsh environments, such as deep-sea vents. |
| Protocell | Large ordered structure enclosed by a membrane that carries out some life avtives such as growth and division. |
| Paleontologist | sciencetist who study ancient life, are like detectives who use fossils to understand events that happened long ago. |
| Cyanobacteria | Fossila resemble the forms of modern species of photosynthetic bacteria. |
| Artificial Selection | Breeding organisms with specific traits in order to produce offspring with identical traits. |
| Natural Selection | Mechanism for change in populations. |
| Mimicry | Stucural adaptation that enables one species to resemble another species. |
| Camouflage | Adaptation that enables spececies to blend with their surroundings. |
| Homologous Structures | Structural features with a common evolutionary origin. |
| Analogous Structures | Body parts of organism that do not have a common evolutionary origin but are similar in function. |
| Vestigial Structure | Present-day organism but was probably useful to an ancestor. |
| Embryo | The earliest stage of growth and development of both plants and animals. |
| Gene Pool | The alleles of population's genes as being together in a large pool. |
| Allelic Frequency | Prercentage of any specific allele in the gene pool. |
| Genetic Equilibrium | Refer to a population in which the frequency of alleles remains the same over generations. |
| Genetic Drift | The alteration of allelic frequencies by chance events. |
| Stabilizing Selection | Natural selection that favors average indiviuals in a population. |
| Directional Selection | When natural selection favors one of the extreme variations of a trait. |
| Disruptive Selection | Individuals with either extreme of a trait variation are selected for. |
| Speciation | The evolution of new species. |
| Geographic Isolation | Whenever a physical barrier divides a population. |
| Reproductive Isolation | When formerly interbreeding organisms can no longer mate and produce fertile offspring. |
| Polyploid | Any species with a multiple of normal set of chromosomes. |
| Granualism | Idea that species originate through a gradual change of adaptations. |
| Punctuated Equilibrium | Hypothesis that agrues speciation occurs relatively quickly. |
| Adaptive Radiation | When ancestral species evolves into an aray of species to fit a number of habitats. |
| Divergent Revolution | Pattern of evolutuion in which species that once were simiar. |
| Convgergent Evolution | Pattern of evolution in which distantly related organisms evolve similar traits. |
