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| a change in the relative frequency of alleles with in a population |
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| group of indviduals within the same species that can interbreed and produce fertile offspring |
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| disappearance of a species off the face of the earth (Cavemen) |
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| the force that drives evolution states that species will naturally choose traits that will better adapt them to the environment and leave more offspring |
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| is when nature provides the variation and humans select the variation that they find useful ( dog breeding) |
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gene pool
inhertitable
must be competition among organisms of the same species |
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gradual- happens slowly
punctuated-happens quickly
convergent-unrelated but resemble one another
divergent-evolved fro a common ancestor but they adapt based on their enviroment
Co-evolution- 2 species evolve because of changes in each other over time
adaptive radiation - small group of species evolves into diverse forms |
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| process that creates a new species due to an isolation |
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| creation of species created due to being physically divided (mountains and lakes) |
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| creation of species due to different behavioral pattern. |
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proves common ancestry
DNA and Amino acis show similarites and differences amoung organisms at molecular level |
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| Having similar structure and anatomical position (but not necessarily the same function) in different organisms suggesting a common ancestry or evolutionary origin (e.g. wings of bats and arms of humans are homologous). |
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| Structures found in various species that may have the same function, but have originated from somewhere different on the evolutionary chain. |
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| Early in development all vertebrate embryos are similar; shows that new genetic instructions have been layered on top of old ones |
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| structures that are reduced and no longer in related species |
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| to change to fit in your environment ( a new school) |
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