Natural Selection
Across
- 4. a way of hiding by looking the same as the background
- 9. to stay alive
- 12. a related organism from a previous generation
- 15. a trait that makes it more likely that an individual will survive in a specific environment
- 17. a type of large molecule that performs important functions inside organisms
- 18. a random change to a gene that sometimes results in a new trait
Down
- 1. an animal that hunts and kills other animals for food
- 2. an instruction for making a protein molecule
- 3. a group of the same type of organism living in the same area
- 5. a characteristic that all members of a species have
- 6. everything (living and nonliving) that surrounds an organism
- 7. a long piece of DNA that contains many genes
- 8. the number of individuals with each trait in a population
- 10. living things, such as plants animals and bacteria
- 11. a graph that uses bars to show how characteristics or values are distributed within a group
- 13. a group of the same kind that do not reproduce with organisms from any other group
- 14. any difference in traits between individual organisms
- 16. a specific characteristic of an individual organism