Natural Selection
Across
- 3. the process by which the distribution of traits in a population changes over many generations
- 5. a young insect that looks somewhat different from the adult
- 6. a related organism from a previous generation
- 7. a trait that makes it more likely that an individual will survive in a specific environment
- 8. any difference in traits between individual organisms
- 9. a group of individuals born and living at about the same time
- 11. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
- 18. the process in which two parents pass on their genes to create offspring
- 20. an organism produced as a result of reproduction
- 22. a characteristic that all members of a species have
- 24. having died out completely and no longer alive anywhere on Earth
- 27. everything (living and nonliving) that surrounds an organism
- 28. something in the environment that affects an individual’s chances of surviving
- 32. an animal that hunts and kills other animals for food
- 34. a type of large molecule that performs important functions inside organisms
- 35. when a huge number of species on Earth
Down
- 1. a random change to a gene that sometimes results in a new trait
- 2. a specific form of a gene that provides instructions for making a particular protein molecule
- 3. a trait that makes it less likely that an individual will survive in a specific environment
- 4. things people do that affect the Earth system
- 10. a long piece of DNA that contains many genes
- 12. from any other group
- 13. a way of hiding by looking the same as the background
- 14. the number of individuals with each trait in a population
- 15. an event or process that leads to a result or change
- 16. a group of the same type of organism living in the same area
- 17. an animal that is hunted or killed by another animal for food
- 19. to stay alive
- 21. a specific characteristic of an individual organism
- 23. to receive genes from a parent
- 25. a graph that uses bars to show how characteristics or values are distributed within a group
- 26. a type of molecule that genes and chromosomes are made of
- 27. a result or change that happens because of an event or process
- 29. living things, such as plants, animals, and bacteria
- 30. a group of organisms of the same kind (in one or more populations)that do not reproduce with
- 31. an instruction for making a protein molecule
- 33. out completely around the same time