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Week 1 BSC notes

by: Emilda Desir

Week 1 BSC notes 1101

Emilda Desir
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About this Document

These notes will be on the final exam.
Evelyn Frazier
Class Notes




Popular in Biodiversity

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This 2 page Class Notes was uploaded by Emilda Desir on Sunday September 11, 2016. The Class Notes belongs to 1101 at Florida Atlantic University taught by Evelyn Frazier in Fall 2016. Since its upload, it has received 73 views. For similar materials see Biodiversity in Biology at Florida Atlantic University.


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Date Created: 09/11/16
BSC1011- Dr. Evelyn Frazier FAU Week 1 August 23,2016 What is Evolution? The basic definition is“Change”.But the whole definition is The changein population to genetic changes in the environment. Modern synthesis of Evolution  Population have genetic diversity  Adaptions (genetic components) pass on to the offspring infact –some of variabilityisheritable.  Most generations, more offspring and produced than cansurvive.  Survival and reproduction arenot random effects. Mechanism of Evolution  Natural Selection  Gene flow: Emigrationand Immigration  Genetic Drift:random changes inthe genetic makeup - Population bottle necking - Founder effect - Catastrophic events will destroy anything depending on their genetics Non-random Mating  In Breeding:breed fromclosely relatedpeople or animals,especiallyover many generations  Sexual Selection: Natural selection arising through preferenceby one sexfor certaincharacteristicsinindividuals of the other sex. Likea game(ex: flirting) Two Patterns of evolution 1. Microevolution 2. Macroevolution Microevolution  Changeof genetic make-up of an existing population of species Macroevolution  Under very special circumstancespopulations canevolve separately Artificial Selection  Humans do selectivebreeding Implications for Evolution  “All organismsshare a common ancestor” (First week notes consist of basic over all information)


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