Evolution by Natural Selection

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Across
  1. 6. is the branch of life science concerned with the analysis of molecular sequencing data to study evolutionary relationships among groups of organisms
  2. 9. intentional reproduction of individuals in a population that have desirable traits
  3. 10. the remains or impression of a prehistoric organism
  4. 11. 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
  5. 13. change in the genetic composition of a population due to chance or random events
  6. 14. technique that uses the decay of carbon-14 to estimate the age of organic materials
  7. 15. when an organism or population is able to survive a substance or situation that would harm a different individual or population
Down
  1. 1. a change in the gene pool of a population over time
  2. 2. a branching diagram showing the cladistic relationship between a number of species
  3. 3. the process in which organisms become better adapted to their environment overtime
  4. 4. the formation of a new species caused by evolution
  5. 5. the dying out or termination of a species
  6. 7. structures derived from a common ancestor
  7. 8. an organism's ability to survive and reproduce in a particular environment
  8. 12. to become better suited to the environment