1. Natural Selection

2. Evolution
Descent with modification or Change in a population over time

3. Natural Selection
Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. Some factor in the Environment selects those individuals that are best suited to their environment to survive and reproduce, thus changing the population over time.

4. Overproduction of Offspring
Organisms tend to produce more offspring than can survive.

5. Inherited Variation
Offspring are born with different traits (phenotype) because of different gene combinations.
Differences are the result of : mutations, crossing over, and/or independent assortment.

6. Competition to survive
There is a finite supply of environmental resources like…
Food, shelter, mates, water, avoiding predation, sunlight, oxygen, etc.

7. Adaptation
Those individuals who are born with variations that help them to survive are said to have an adaptation.
Variation is random and so an individual cannot choose to have an adaptation
An advantage in one environment is sometimes a disadvantage in another.

9. Reproduction “Differential Reproductive Success”
Survival of the fittest – those individuals who are better suited to their environment will survive and reproduce most successfully. It is the individual who leaves behind the most offspring who “wins”

10. Result
Over time traits that lead to more offspring accumulate in the environment and the population becomes better suited to their environment.

11. Industrial melanism

12. Activities
Read survival of the sneakiest article and answer the questions
Make a cartoon showing overproduction, variation, finite resources/competition, natural selection/differential survival and reproduction
Peppered moth simulation

13. Ideas for your cartoon…

14. Coevolution