Natural Selection

3. the process by which the distribution of traits in a population changes over many generations
7. an animal that is hunted or killed by another animal for food
8. the number of individuals with each trait in a population
10. a trait that makes it more likely that an individual will survive
11. an instruction for making a protein molecule
12. a way of hiding by looking the same as the background
14. something in the environment that affects an individual's chances of surviving
16. an animal that hunts and kills other animals for food
17. a related organism from a previous generation
18. a group of individuals born and living at about the same time
19. to receive genes from a parent
21. a group of organisms of the same kind (in one or more populations) that do not reproduce with organisms from any other group

1. a trait that makes it less likely that an individual will survive in a specific environment
2. any difference in traits between individual organisms
4. a random change to a gene that sometimes results in a new trait
5. a specific characteristic of an individual organism
6. to stay alive
9. an idea about what might happen that is based on what you already know
13. a group of the same type of organism living in the same area
15. everything (living and nonliving) that surrounds an organism
20. a graph that uses bars to show how characteristics or values are distributed within a group