Across
- 3. informs our understanding of a species oldest layers
- 4. eukaryotes evolved from prokaryotes
- 6. is the transfer of genes between different individuals
- 8. an example of this is Sickle Cell Anemia against Malaria
- 9. is a long period of time when a population is uninterrupted
- 13. creation of new species
- 16. similar structures but different functions
- 19. inheritable trait/can be beneficial & favorable to the environment
- 20. Scientist who first made observations of natural selection
Down
- 1. whale hipbones and human apendix are examples of what?
- 2. this stops gene flow and can lead to speciation
- 5. uses carbon halflies to find an exact age
- 7. A Heritable change in characteristics within a population from one generation to the next
- 10. all organisms are related to one another
- 11. impact on small populations
- 12. This is how most species living today have been able to survive/strengthens or weakens inheritable traits
- 14. this process produces the most genetic variation within a species
- 15. same species,variation exist within a population
- 17. looking at layers in sedimentary rock
- 18. variety of living things that live on earth