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Natural Selection
Page 59
Mutations
• Errors in DNA that
typically occur when a
cell divides- accidental
and random!
• Sometimes, mutations
produce a new trait
• Whether the trait is good
or bad depends on the
environment
Charles
Darwin
• Proposed the theory of
Natural Selection in 1859
• Wrote “On the Origin of
Species” to explain evolution
Natural •
Selection
A process in which individuals that are
better adapted to their environment
survive and reproduce more successfully
than others-passing on successful traits
to offspring.
• “Survival of the Fittest”
• Similar to the idea of selective breeding
(like what we see with dogs)
The Peppered Moth