Evidence for Evolutionbiogeography
fossil record
comparative anatomy
homologous structures
vestigial structures
analogous structures
comparative embryology
similar biochemistry (DNA and proteins)
Lamarck1744-1829
Believed in “use and disuse”
If you needed a trait, you could develop it in your lifetime
Believe you would pass on acquired traits to your offspring
Charles Darwin
1809-1882
Sailed around the world 1831-1836
Researched Galapagos Islands
Peppered Moth Simulation
Work in partners
Simulate natural selection in moths
Misconceptions
Misconceptions
Misconceptions
Misconceptions
MISCONCEPTION: Evolution is like a climb up the ladder of progress – organisms get “better.”
Natural Selection Descent with Modification
More members are born into a population than will survive
Not all members are the same (genetic diversity)
Some members are better suited to environment
Those better suited will survive and pass traits on to offspring
Fitness: The ability to survive and reproduce. Increased fitness = survival
Natural Selection and Fitness
Over time, natural selection results in changes in the inherited characteristics of a population.
Increase in fitness of a species