Across
- 3. the remains or impression of a prehistoric organism
- 5. the dying out or termination of a species
- 6. the process in which organisms become better adapted to their environment overtime
- 7. an organ that served a purpose in the distant ancestor of an organism but is no longer pertinent in the presently existing, recently evolved, organism
- 8. intentional reproduction of individuals in a population that have desirable traits
- 10. technique that uses the decay of carbon-14 to estimate the age of organic materials
- 12. the formation of a new species caused by evolution
- 14. a branching diagram showing the cladistic relationship between a number of species
- 15. an organism's ability to survive and reproduce in a particular environment
Down
- 1. is the branch of life science concerned with the analysis of molecular sequencing data to study evolutionary relationships among groups of organisms
- 2. when an organism or population is able to survive a substance or situation that would harm a different individual or population
- 4. structures derived from a common ancestor
- 9. to become better suited to the environment
- 11. change in the genetic composition of a population due to chance or random events
- 13. a change in the gene pool of a population over time