Theory of evolution

Things change leaves change color in fall mountains erode individuals in a family show some of the same traits insects, not related show some of the same traits

THE THEORY OF EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php

I have called this principle, by which each slight variation, if useful, is preserved, by the term Natural Selection. — Charles Darwin from "The Origin of Species" Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php http://evolution.berkeley.edu/evolibrary/home.php www.darwinday.org/englishL/life/beagle.ht Used by permission of Darwin Day Celebration (at DarwinDay.org), 2006 www.darwinday.org/englishL/life/beagle.html http://evolution.berkeley.edu/evolibrary/home.php

EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php http://science.howstuffworks.com/animal-camouflage2.htm

EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College .

WHAT OTHER INDUSTRIES WOULD BE WORRIED ABOUT RESISTANCE? Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php Some bacteria have become resistant to typically used antibiotics.

OTHER EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php

OTHER EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php

OTHER EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],WHAT IS ANOTHER EXAMPLE OF VESTIGIAL STRUCTURES? Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php These fish live in the dark and therefore do not need functional eyes.

OTHER EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php

OTHER EVIDENCE OF EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php DNA and RNA

MECHANISMS FOR EVOLUTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College .

MUTATION GENETIC DRIFT GENE FLOW - MIGRATION Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . ALL IMAGES: http://evolution.berkeley.edu/evolibrary/home.php Any change in an organism’s DNA When some organisms RANDOMLY survive longer than others and pass on their genes. The movement of genes from one population to another through migration of individuals.

WHAT IS NATURAL SELECTION? Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php Variation in some traits (color of beetles) Green beetles tend to get eaten and do not survive long enough to reproduce The surviving brown beetles have brown offspring. Eventually all the green beetles get eaten, leaving only brown beetles.

WHAT IS SPECIATION? ,[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php A barrier, either physical, like a river changing course, or nonphysical, causes the population to become separated.

WHAT IS SPECIATION? ,[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php

WHAT IS SPECIATION? ,[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . Gradualism – slow steady change over a long time Punctuated equilibrium – a large amount of change in a short time due to a specific event.

WHAT IS SPECIATION? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College .

ADAPTIVE RADIATION – AN EXAMPLE OF DIVERGENT EVOLUTION Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College . http://evolution.berkeley.edu/evolibrary/home.php http://www.vanderbilt.edu/AnS/english/Clayton/Galapago_finches.gif

REFERENCES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Life Sciences-HHMI Outreach. Copyright 2006 President and Fellows of Harvard College .

Theory of evolution

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Theory of evolution