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Evolution
| Question | Answer |
|---|---|
| Genetic Drift | Death causing the loss of an allele (traits) within a population by CHANCE. (Forest fire/freak accident) |
| Gene Flow | New alleles (genetic material) being introduced into a population by organisms MOVING IN from another population. |
| Recombination | Genetic information being mixed up every time a gamete is formed = all gametes are different. (you give your babies different combos of your DNA) |
| Mutation | Spontaneous change in the DNA sequence that give rise to new traits. Only passed on if occurs in the gametes of an organism. |
| Gene pool | All genetic information (alleles) possessed by a population. |
| Allelic Frequency | How often an allele is seen within a population. |
| DNA Sequence | Blueprint for life - translated to amino acid sequences --> traits |
| Natural Selection | Survival of the most fit for an environment. The best adaptations are passed to the next generation. |
| Adaptation | A trait caused by a mutation that ends up being beneficial and increasing and organism's chance of survival. Passed to next generation. |
| Diversity | Level of differences (variety) within a population. |
| Speciation | The development of a new species that has become so genetically different from it's original population that it no longer interbreeds. |
| Interbreed | To create fertile offspring. Reproduce within a group. |
| Competition | Struggle between organisms over finite resources. |
| Habitat | Environment in which an organism lives. |
| Offspring | Babies / next generation |
| Inherited variation | Differences passed down from parents to offspring. |
| Reproductive advantage | Organisms whose adaptations make them more likely to mate and reproduce. |
| Fossil record | Chart of found fossil locations and sedimental rock they were found in. In most cases older fossils are at the bottom and younger on top. |
| Equilibrium | Balance |
| Biogeography | The study of the locations of the habitats of different species on a map. |
| Homologies | Similarities between species / things in common |
| Anatomical homologies | Similarities in the structural make up of different species (bones etc.) |
| Molecular Homologies | Similarities in the DNA of different species. The more similar the DNA, the more closely related the organisms. |
| Developmental Homologies | Similarities in the embryos of different species of organisms |
| Embryology | The study of embryos |
| Cladogram | Chart of the relatedness of organisms based on their traits. |
| Ancestor | Relative from your past |
| Descendants | Your children/their children/ their children's children. |
| Finite resource | A resource that runs out. |
| Population | A group of the same species living in the same area. |
| Stasis / equilibrium | When a population is balanced and no change is occurring. |
Created by:
kpartin
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