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| sequence of DNA that contains information about genetic traits, thus the code for specific proteins. |
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| Changes that occur in the characteristics of a population. |
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| Evolution of one or more species from an ancestral form;speciation |
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| Similarity in characteristics as a result of common ancestry. |
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| Modified with no, or relatively minor function compared to the function in other descendants of the same ancestor. |
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| Change in allele frequency that occurs as a result of chance. |
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| Selective breeding of domesticated animals and plants to increase the frequency of desirealbe traits. |
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| Form of natural selection that occurs when a trait influences the likelihood of mating. |
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| Evolution of same trait or set of traits in different populations as a result of shared environmental conditions rather than shared ancestry. |
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| Idea that some groups of people are naturally superior to others. |
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| Alternate versions of the same gene; produced by mutations |
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| Trait that is favored by natural selection and increases an individual's fitness in a particular environment. |
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Definition
| relative survival and reproduction of one variant compared to others in the same population |
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Definition
| Occurs when gene flow is eliminated between two populations. over time, traits found in one population begin to differ from traits found in the other population |
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| All of the alleles found in the individuals of a species |
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Definition
| Spread of an allele throughout a species' gene pool |
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Definition
| Type of sampling error that occurs when a small subset of individuals emigrates from the main population to found a new population. Results in differences in the gene pools of source population and the new population |
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Definition
| Tendency for individuals to mate with someone who is like themselves |
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Definition
| Dramatic but short-lived reduction in population size followed by an increase in population |
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| Everything originated from one organism |
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Definition
| changes in the features of individuals in a biological population that occur over the course of generations. |
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| Process by wich individuals with cetain trats have greater survival and reproduction than individuals who lack these traits, resulting in an increase in the frequensy of unsuccessful ones. |
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| Biological Species Concept |
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Definition
| Definition of a species as a group of individuals that can interbreed and produce fertile offspring, but typically cannot breed with members of another species. |
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| Morphological Species Concept |
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Definition
| Definition of species that relies on differences in physical characteristics among them |
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Definition
| Populations of a single species that have diverged from each other. Biologists do not agree on a definition of race. |
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Definition
| Evolution of one or more species from an ancestral form. |
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Definition
| Prevention of gene flow between different biological species due to failure to produce fertile offspring; can include prezygotic barriers and postzygotic barriers. |
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