Natural Selection

2. Species gradually change to respond to changing environment. The process by which individuals that were better adapted to their environment are more likely to survive and reproduce than less fit members of the same species.
4. classification comprising related organisms that share common characteristics and are capable of interbreeding.
5. Organisms produce more offspring than can survive
9. The struggle between organisms to survive in a habitat with limited resources.
10. Random changes in the genetic material; helpful or harmful.
14. The experiment found that birds selectively prey on peppered moths depending on their body colour in relation to their environmental background.
15. (two words) The process of selecting a few organisms with desired traits to serve as parents of the next generation.
16. the combination of all the genes (including alleles) present in a reproducing population or species.
17. quality belonging typically to a person, place, or thing and serving to identify it.
18. A group of organisms of the same species populating a given area.
20. Any genetic variation that makes an organism better suited to its environment.

1. choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics.
3. the change in the characteristics of a species over several generations
6. Any difference between individuals of the same species.
7. English naturalist who formulated the theory of natural selection.
8. Having traits that allow survival and success in one’s environment.
11. the role an organism plays in a community
12. A group of similar organisms that can breed and produce fertile offspring.
13. selection (Two words) The process by which. Individuals that were better adapted to their environment are most likely to survive and reproduce than other members of the same species.
19. a particular characteristic, quality, or tendency that someone or something has.