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Darwin and natural selection
1. Bell Work (pg 4)
• What does “Natural Selection” mean?
Checking: Create a timeline (green) and
Radiometric dating (yellow)
2. Construct your Interactive Notes
• Staple 7 pages to the cover
• On the cover, write
• Evolution
• Name, Period
• Draw a color picture
3. Notes: Darwin and Natural Selection
(page 2)
• Charles Darwin (1809-1882) Founder of
modern evolutionary biology
4. Notes: Darwin and Natural Selection
(page 2)
• Charles Darwin (1809-1882) Founder of
modern evolutionary biology
• Began formulating ideas about natural
selection during journey around South
America aboard the Beagle in the 1830’s
5. Notes: Darwin and Natural Selection
(page 2)
• Charles Darwin (1809-1882) Founder of
modern evolutionary biology
• Began formulating ideas about natural
selection during journey around South
America aboard the Beagle in the 1830’s
• Published “On the Origin of Species” in 1859
10. Natural Selection
• “The best idea anyone ever had”
1. Individuals vary
2. Organisms produce more offspring than the
environment can support, leading to a
“struggle for survival”
11. Natural Selection
• “The best idea anyone ever had”
1. Individuals vary
2. Organisms produce more offspring than the
environment can support, leading to a
“struggle for survival”
3. Individuals with traits that help them survive
are more likely to produce offspring
12. Natural Selection
• “The best idea anyone ever had”
1. Individuals vary
2. Organisms produce more offspring than the
environment can support, leading to a
“struggle for survival”
3. Individuals with traits that help them survive
are more likely to produce offspring
4. Over time, those favorable traits will become
more common in the population
13. Example
• A mutation causes a snail to be
white, allowing it to blend in with the white
rocks it lives on. This snail is less likely to be
eaten and will have more offspring. Over
time, white snails will become more common
in the population
14. Output activity (pg 3)
• Come up with your own example of natural
selection. The example can be real or fanciful.
