Across
- 4. factors that control a trait
- 5. the study of the interactions among organisms and their environment
- 8. organism that makes its own food
- 9. same alleles for a single trait
- 11. a person's physical appearance
- 14. organism that eats both plants and animals
- 15. organism that breaks down soil and organic material
- 19. factors that control the growth, reproduction or population of organisms
- 21. a chart that shows all the possible combinations of two genotypes
- 22. the amount of organisms of the same species in an area
- 23. choosing two organisms with the desired traits to breed
Down
- 1. this is mostly lost from one trophic level to the next
- 2. one is the predator and one is the prey
- 3. the study of heredity
- 6. a person's genetic makeup
- 7. organism that eats only plants
- 10. model showing interconnecting food chains in a community
- 12. different alleles for a single trait
- 13. organism that generally obtains food by feeding on another organism
- 16. a change in a gene or chromosome
- 17. non-living factors that affect an organism
- 18. organism that eats only meat
- 20. relationship in which both species benefit