Bell Work (pg 4)

• What does “Natural Selection” mean?

Checking: Create a timeline (green) and Radiometric dating (yellow)

Construct your Interactive Notes

• Staple 7 pages to the cover• On the cover, write• Evolution• Name, Period• Draw a color picture

Notes: Darwin and Natural Selection (page 2)

• Charles Darwin (1809-1882) Founder of modern evolutionary biology

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

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

Natural Selection

• “The best idea anyone ever had”

Natural Selection

• “The best idea anyone ever had”1. Individuals vary

Natural Selection

• “The best idea anyone ever had”1. Individuals vary2. Organisms produce more offspring than the

environment can support, leading to a “struggle for survival”

Natural Selection

• “The best idea anyone ever had”1. Individuals vary2. 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

Natural Selection

• “The best idea anyone ever had”1. Individuals vary2. 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

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

Output activity (pg 3)

• Come up with your own example of natural selection. The example can be real or fanciful.