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27 Cards in this Set
- Front
- Back
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Taxonomy |
Identifying, naming and classifying species |
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Linnaean system |
Species Genus Family Order Class Phylum Kingdom Domain |
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Homology |
Similarity resulting from common ancestry |
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Vestigial structures |
Left over parts from eveloution, goosebumps |
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Population |
Group of same species in same area |
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Gene pool |
All the alleles in a population |
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Hardy winberg formula |
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Genetic drift |
Change in gene pool of small population due to chance |
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The bottleneck effect |
Less genetic variety because of population reduction |
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Founder effect |
When few numbers colonize a isolated habitat |
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Gene flow |
Genetic exchange w another population, gain or loss of alleles |
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Species |
Population that can breed succesfully with on another |
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Reprductive barrier |
Anything that prevents related species from breeding |
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Prezygotic barriers |
Pevent mating or fertilization |
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Allopatric specitation |
Initial block to gene flow is a geographic barrier, grand canyon squirrles |
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Sympatric specitation |
Without geographic isolation |
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Polyploidy specitation |
Occures from an accident in cell division making an extra set of cromosomes |
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Paedomorphosis |
retention in adult body structure that were juvenile in ancestor, human skull like baby chimps |
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Cladistics |
Oginisims grouped by common ancestor |
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Clade |
Ancestral species and it's desendents |
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Ecology |
Study of interactions between organisims and their environment |
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Biotic factors |
Living factors |
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Abiotic factors |
Nonliving factors |
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Communities |
All orginisims in an area |
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Ecosystems |
All the biotic and abiotic factors in an area |
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Photog zone |
Where light reaches for photosynthesis in water |
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Population density |
Number of individuals per unit area |
