Across
- 2. a type of natural selection in which one extreme phenotype is selected over all other phenotypes
- 4. a feature that allows an organism to survive and reproduce in its environment
- 7. a type of selection that occurs when certain traits increase reproductive success
- 10. a type of natural selection in which both extreme phenotypes are selected over those with the intermediate phenotype
- 11. (two words) the collection of alleles found in all of the individuals of a population
- 14. the elimination of a species from Earth
- 15. a type of natural selection in which intermediate phenotypes are selected over phenotypes of both extremes
- 16. the process of biological change by which descendants come to differ from their ancestors
- 18. a type of structure found in different species of organisms that share structural similarities but may have very different functions
- 20. (two words) the process by which humans make use of the genetic variation in organisms by acting as the selecting agent
Down
- 1. a type of structure that are remnants of once-important structures that gradually have lost all or most of their function over time.
- 3. a group of similar organisms that can breed and produce fertile offspring
- 5. (two words) the mechanism by which individuals that have inherited beneficial traits show differential reproductive success.
- 6. the measure of the ability of an organism to survive and reproduce
- 8. the theory that states that the geological process that shape earth are uniform, or remain the same through time.
- 9. the rise of two or more species from a single existing species
- 12. a type of selection where selective behavior acts on alleles that favor the survival of close relatives
- 13. the preserved remains of an organism
- 17. a behavior in which an animal reduces its own fitness to help other members of its social group
- 19. a type of data distribution where most of the data values fall in the middle of the data-set