Across
- 2. producing organisms that are identical to the body cell donor
- 3. differences among organisms of the same species
- 6. mating two organisms to get desired traits
- 8. organisms need adaptations that allow them to survive and pass these on to offspring
- 9. Survival of the
- 10. evolution is a slow process, taking thousands and sometimes _____ of years for a species to change
- 13. producing more offspring than can survive to adulthood
- 15. Charles _____; developed the theory of evolution after traveling the world observing species
- 16. slow change in a species over a long period of time
- 17. a species whose survival is threatened, usually by human activities
- 18. when a species is no longer adapted to its environment and dies out forever
Down
- 1. structure or behavior an organism has to help it survive in its environment
- 2. struggle for resources such as food and water
- 4. organisms with traits best suited for the environment will survive to reproduce and pass on those traits
- 5. genetic engineering is sometimes called "messing around with _____"
- 7. altering the DNA of organisms to get desired traits
- 11. the huge variety of life on Earth
- 12. the goal of organisms is to _____ and pass on their traits
- 14. how a clone's DNA compares to the body cell donor's DNA