1. Process of Natural Selection – Cornell Notes Assignment #3

2. Cornell Notes
Write the underlined yellow words on the left side and the definition and descriptions on the right side.
At the end of the notes make a summary.

3. Overproduction
egg sac

4. Overproduction:. when organisms in a. population. produce
Overproduction: when organisms in a population produce more offspring than their environment can support.

5. Example:
Tarantula’s egg sac can hold 500 to 1,000 eggs.
Some eggs will survive and develop into adult spiders and some will not.

6. Inherited Variation

7. Variation:. Differences in a. population of organisms
Variation: Differences in a population of organisms of the same species.
● (helpful) variations are passed to offspring from their parents through genes/alleles.

8. Example:
Every individual has its own combination of traits.
Each tarantula is similar but not identical, to its parents.

9. Struggle to Survive (adaptation)

10. Adaptation:. An inherited trait that. helps an organism
Adaptation: An inherited trait that helps an organism survive and reproduce in its environment.

11. Example:
Some tarantulas may have traits that make it more likely they will survive.
A tarantula may be better able to fight off predators, like the wasp (pictured on front).

12. Successful Reproduction (natural selection)

13. ● Natural Selection: When organisms with helpful variations (adaptations) are better able to survive and reproduce in their environment.
Large populations have a greater chance of having traits that allow survival in a new environment .

14. Natural Selection
Over time the offspring with helpful variations increase and become a larger percentage of the population.

15. The offspring may inherit the traits that help them survive.
● Example:
Tarantulas best adapted to their environment are likely to survive and reproduce.
The offspring may inherit the traits that help them survive.

16. Summary
Write 2 to 3 paragraphs reviewing the information that your just wrote.