BIOL 1090 Lecture Notes - Carl Linnaeus, Paraphyly, Phenotypic Plasticity
28 Feb 2014
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Document Summary
3 individuals , populations , species , families , organized in a nested hierarchy: one fits within the next, not unlike those russian dolls where inside each one is another, smaller one. The system that biologists use to classify species reflects this nested hierarchy. As one moves up the hierarchy, the categories become more general and include more and more lower-level categories. Domains, kingdoms, phyla (singular: phylum), classes, orders, families, genera (singular: genus), and. Species (singular is also species, not specie). ariability at these levels is one of the things we mean when we talk about biodiversity . Of course, it is also true that there are differences within species. If there weren"t, there would be no evolution and thus, no biodiversity as we know it. Diversity among species biologists use the word diversity to refer to the number of species in a taxonomic group or a geographical area.
