311DCh22 - Ch. 22 pg. 452 467 1. Many species originated...

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Ch. 22 pg. 452 – 467 1. Many species originated from descendants of ancestral species that were different from modern species 2. Natural selection – population can change over generations if individuals that possess certain heritable traits leave more offspring than other individuals Evolutionary adaptation – an accumulation of inherited characteristics that enhance organisms’ ability to survive and reproduce in specific environments Evolution – change over time in the genetic composition of a population Linnaeus – found of taxonomy – branch of biology that deals with naming and classifying organisms according to genus and species Fossils – remains or traces of organisms from the past. Sedimentary rocks – most fossils are found in them; formed from the sand and mud that settle to the bottom of seas, lakes, and marshes Strata – new layers of sediment cover older ones and compress them into superimposed layers of rock Paleontology – study of fossils Catastrophism – each boundary between strata represents a catastrophe, such as flood or
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This note was uploaded on 02/01/2011 for the course BIO 311D taught by Professor Reichler during the Spring '08 term at University of Texas at Austin.

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311DCh22 - Ch. 22 pg. 452 467 1. Many species originated...

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