Across
- 4. a change in genetic structure
- 7. study of embryos and their development
- 8. model describing the rapid evolution that occurs when mutation of a few new genes results in a species suddenly changing into a new species
- 9. the formation of new and distinct species in the course of evolution
- 11. structure that doesn’t seem to have a function or purpose and may have once functioned in the body of an ancestor
- 13. physical features that help an organism survive
- 14. inherited trait that makes an individual different from other members of the same species and results from a mutation in the organism’s genes
Down
- 1. model describing evolution as a slow process by which one species changes into a new species through a continuing series of mutations and variations over time
- 2. any structural or behavioral change that helps an organism survive in its particular environment
- 3. things organisms do to survive
- 5. the surroundings or conditions in which a person, animal, or plant lives or operates
- 6. body parts that are similar in structure and origin and can be similar in function
- 10. a process by which organisms with favorable traits are more likely to survive and reproduce
- 12. change in inherited characteristics over time