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BIL160, DuBois

by: Rachael Phillips

BIL160, DuBois BIL 160

Rachael Phillips
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About this Document

First day of class notes
Evolution and Biodiversity
Adrienne DuBois
Class Notes
Biology, Biodiversity, evolution




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This 2 page Class Notes was uploaded by Rachael Phillips on Tuesday January 12, 2016. The Class Notes belongs to BIL 160 at University of Miami taught by Adrienne DuBois in Spring 2016. Since its upload, it has received 82 views.

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Date Created: 01/12/16
BIL160 January 12, 2016 Evolution  Evolution: decent with modification (how Darwin described), living species = decedents  of ancient species; change in allele frequency over time/change in genetic composition of a population over time   Darwin came up with evolution o Origin of Species:  Decent with modification  Species today come from decent from ancient species. Captures  life’s unity/diversity. Species today share common  characteristics/ancestors. Birds: flamingo, penguin, songbird; all  different, but have common ancestor (different shape beak but  similar looking, same DNA sequences, same morphology for most  part)  Natural selection   How Darwin proposed we get from an ancestral species to modern  species   Long history of evolutionary though prior to Darwin o Economics/geology influenced Darwin   Natural selection DOES NOT EQUAL evolution o Evolution: process of species change over time o Natural selection: one mechanism of evolution Biodiversity  ~10­100 million species of organisms  Taxonomy: grouping different organisms  Prokaryote: before nut (no nucleus)  Eukaryote: true nut (with nucleus)   All organisms share basic characteristics of life (but differ in how they satisfy  requirements for life): o Reproduction o Energy metabolism/respiration o Grow/develop o Homeostasis o Responds to stimuli/environment o Cellular organization  Ecology: study of how organisms interact with each other and their environment   Population: members of the same species in the same area that are capable of  interbreeding to form fertile offspring  Community: all species that are living in a given area that interact, but do not interbreed,  with each other (without abiotic factors)  Ecosystem: all the species in a given area and how they interact with their abiotic  environment  Biosphere: all ecosystems on earth  


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