Natural Selection

4. a specific characteristic of an individual organism
6. a group of individuals born and living at about the same time
7. a type of molecule that genes and chromosomes are made of
9. a trait that makes it less likely that an individual will survive in a specific environment
11. any difference in traits between individual organisms living things, such as plants, animals, and bacteria
12. a group of organisms of the same kind (in one or more populations) that do not reproduce with organisms from any other group
14. a group of the same type of organism living in the same area
15. a trait that makes it more likely that an individual will survive in a specific environment
18. a related organism from a previous generation
20. a random change to a gene that sometimes results in a new trait
21. a characteristic that all members of a species have
22. everything (living and nonliving) that surrounds an organism

1. an animal that hunts and kills other animals for food
2. a way of hiding by looking the same as the background
3. a specific form of a gene that provides instructions for making a particular protein molecule
5. to receive genes from a parent
8. the process by which the distribution of traits in a population changes over many generations
10. an idea about what might happen that is based on what you already know
13. a long piece of DNA that contains many genes
16. an animal that is hunted or killed by another animal for food
17. an organism produced as a result of reproduction
19. an instruction for making a protein molecule