esrm100s05 - Lesson 5: Biological Diversity Big Question...

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Lesson 5: Biological Diversity Big Question Big Question: Can We Save Endangered Species and Keep Biological Diversity High?
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Lesson 5/ ESRM 100 / University of Washington What Is Biological Diversity? Biological diversity is the wealth of species that live on Earth Commonly expressed as the number of species or genetic types in  an area
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Lesson 5/ ESRM 100 / University of Washington Biological Evolution •An important question about biological diversity is "How did it  all come about?" •In the 19th century, Charles Darwin proposed an explanation  that became known as biological evolution •It is the change in inherited characteristics of a population from  generation to generation •Ultimately, it can result in new species
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Lesson 5/ ESRM 100 / University of Washington Mutation •Deoxyribonucleic acid (DNA) carries inherited information from  one generation of cells to the next •The chemical information for a single characteristic is a gene •The genetic makeup of an individual or group is a genotype
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Lesson 5/ ESRM 100 / University of Washington Selection Change is not always for the better. Mutation can result in a new  species whether or not that species is better adapted to the  environment than its parent species. Individuals with characteristics making them better able to 
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This note was uploaded on 10/07/2009 for the course ESRM 13470 taught by Professor Rob during the Spring '09 term at University of Washington.

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esrm100s05 - Lesson 5: Biological Diversity Big Question...

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