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BIOL 1201 (32)
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Chapter 1

Chapter 1 Notes (Fall 2013) (got 94% in the course)

7 Pages

Biological Sciences
Course Code
BIOL 1201

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Bio 1201 Chapter 1826About 18 million species have been identified and namedWith so many different specifies there are many different unifying similarities1Evolution is a central theme in biology the ability to evolve is built into organismsEvolution is a change in a genetic makeup of a population over time as a result of natural selectionNatural Selection is the driving force behind evolutionVariation were all differentCompetition we will survive There are variations within every species ex some are tall some are shortMeans some are better suited to survival natural selectionVariability comes from genes and genes are inheritedConclusion more good genes survive and therefore populations change2Life contains an order of structural levels with each level building on levels beneath it Hierarchy of biological organization1Biosphere all of the environments on earth that are inhabited by life land water all layers of atmosphere2Ecosystems all living things in a particular area along with nonliving environmental components with which life interacts soil water air light3Community entire array of organisms inhabiting a particular ecosystem4Population individuals of a species living within the bounds of a particular area
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