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| biologists who study the relationships among groups of different organisms |
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| a feature unique to a common ancestor thit is passed down to all of its descendents, clearly defining them as a group. |
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| Similarities that do not indicate close evolutionary relationships. Very distantly related organisms share features because they just happened to evolve the same features indepentently |
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| closely related species are grouped together to form.. |
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| Each ________ is given a scientific name. The first word identifies the _____ to which the organism belongs, and the second defines the ________. Ex: Homo Sapiens |
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| closely related genera are grouped together into a... |
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| Closely related families are grouped together into a(n)... |
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| Closely related orders are grouped into a... |
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| Closely related classes are grouped into a... |
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| Closely related phyla are grouped together into a... |
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| Bacteria, Archaea, and Eukarya |
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| bacteria-like organisms best known for living in extremely harsh environments |
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| all the rest of the living organisms, from amoebas to plants to fungi to animals |
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| the movement of genes from one organism or group of organisms, not vertically within a lineage via reproduction, but horizontally to another lineage altogether by some other means |
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