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Chapter 18

Chapter 18 Notes

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Biological Sciences
BIOL 1002
All Professors

CHAPTER 18Systematics Seeking Order Amidst DiversityOrganisms are arranged or grouped by the science of taxonomyTaxonomy is the branch of biology concerned with naming and classifying the diverse forms of lifeOrganizing or grouping things helps in dealing with themExample Grocery store or your closetThe same idea holds true for the study of lifeThere are many ways that things may be groupedPlants verses animalsOne of the early classification systems placed the animals in one group and the plants in anotherThe bacteria fungi and many protists were considered plants while some of the protists were grouped with the animalsThe origins of taxonomy date back to AristotleHowever the foundation for modern classification binomial nomenclature was developed by Linnaeus in the 1700sOrganisms are classified or grouped into categoriesThese categories are further divided into smaller and smaller groupings creating an organizational hierarchyThe lowest two categories of the taxonomic hierarchy genus and species make up the scientific name for an organismExample Homo sapiensThe genus name is capitalized and the species name begins with a lowercase letter The scientific name is usually underlined or italicized
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