Evolution: How did Lamarck explain evolution?
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Genetic Mutations
Changes in a single gene
Lamarck's Theories Disproved?
Lamarck didn't know how the traits were inherited or that an organism's behavior didn't effect it's characteristics
Somatic Mutations
Mutations not passed on to next generation
Use + Disuse Theory
Through selective use and disuse of an organism's organs, traits were either acquired or lost over time. These additional (or lack of) traits could then be passed on to offspring. Which eventually led to the evolution of a species.
Inheritance of Acquired Characteristics
Traits developed during a parent's lifetime could be passed to their offspring
