Transcript Evolution

 Long gradual
process
 Changes in
traits and
appearances
 More complex
 Natural
section
 Small-scale changes
 In gene pool of a population
 Changes organisms characteristics
House
Sparrow
Introduced to North America in
1852
Adapted to climate of North
America
Northern population largerbodied and darker
Southern population smallerbodied and lighter
 Over time
 Significant changes in organisms
 Newer organisms considered a new species
Example: Lizard evolving
to a road-runner
Study of formation of life
Comparison
development of embryos
Refers to development of
fertilized egg
Picture shows
development of different
embryos
Gene abnormality
relation to normal
configuration
Random change in
DNA sequence
Create variation to
gene pool
Heritable
 All animals and humans
 Evolve slowly over time
 Natural Selection
 Adapted to environment
 Pass traits to offspring
 Qualities transform different species
 "Understanding Evolution." Examples of Microevolution. 11 Dec. 2008
<http://evolution.berkeley.edu/evolibrary/article/_0/evoscales_03>.
 "Evolution." Genetic Mutation. 10 Dec. 2008
<http://www.cartage.org.lb/en/themes/sciences/lifescience/physicalanthropology/evolutionfact/gen
eticmutation/geneticmutation.htm>.
 "Evolution." Macroevolution. 9 Dec. 2008
<http://evolution.berkeley.edu/evosite/evo101/viadefinition.shtml>.
 "Evolution." The Evolution Theory. 11 Dec. 2008
<http://www.albalagh.net/kids/science/evolution.shtml>.
 "Evolution." Darwin's Theory of Evolution. 7 Dec. 2008 <http://www.allaboutscience.org/darwins-
theory-of-evolution.htm>.