Lab 1 Essay

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Lab I: Evolutionary Classification Comments: Top of Form 1 This week's Lab I on classification is straightforward and not lengthy. Biologists must identify and classify all species in order to systematically study them. The Lab Overview gives a good introduction to taxonomy, the branch of biology involved in classification. Lab I will give you experience in use of dichotomous keys. These keys are often part of inexpensive field guides, which are available to identify common plants and animals (although the best part about field guides these days is all the great photos or drawings of the species). Submission & Due Date: Please make observations and answer questions as instructed in the lab exercise. You may use more space than is provided for your answers. Please submit the completed Lab I as a Word attachment to your Assignment Folder. Overview Taxonomy is the study of the classification of organisms. Classification is simply a way of sorting things in an orderly manner. For example, if you have a box of mixed stationary supplies on your desk—paper clips, staples, rubber bands, and thumb tacks—and you decide to put them into four separate containers so that you can use them more efficiently, you are classifying them. There are at least two million species of organisms alive on the planet right now, most of them insects. There have been many other species that are now extinct. To try to keep them in some kind of order to examine, compare, and discuss them in a consistent manner, biologists have set up a system known as the binomial system of nomenclature. In this system, two names are assigned to each organism, a genus name and a species name. The genus name indicates the group of related species to which the organism belongs, and the species name indicates the specific species. For example, the scientific name for a chimpanzee is Pan troglodytes. Pan is

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