Unit 2: Evolution

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Across
  1. 3. missing component of Earth's early atmosphere that currently protects against UV radiation
  2. 4. organelle that resulted from a heterotrophic eukaryote engulfing a photoautotrophic bacteria
  3. 7. evolution that occurs because 2 organisms evolve similar features because they evolved in a similar environment but are NOT closely related
  4. 8. the genetic make-up of an organism
  5. 11. all of the members of a given species in a certain location at a given time
  6. 14. the favored trait that gets selected for and becomes abundant in the population
  7. 15. Father of Evolution
  8. 16. Scientists who showed that the monomers of life could be formed through abiotic means
  9. 18. how eukaryotes evolved
  10. 22. structures that indicate divergent evolution from a common ancestor
  11. 24. method used to determine how many years ago an organism was alive
  12. 30. type of selection used by horse, dog, or flower breeders
  13. 32. organisms with membrane-bound organelles
  14. 33. environmental state of early Earth
  15. 34. method used to determine if one fossil is older than another...but not for how long ago is was alive
Down
  1. 1. structures that are similar in appearance & function but are the result of convergent evolution
  2. 2. branching evolution
  3. 5. the physical characteristics/traits of an organism]
  4. 6. members of different populations of organisms interacting with each other in a given area
  5. 9. evidence of evolution that show how a structure changed over time
  6. 10. type of selection in which both extremes trais are selected against
  7. 12. survival AND reproduction of the fittest
  8. 13. stable molecule that is the current molecule of inheritance
  9. 17. single-stranded molecule that was the first genetic material
  10. 19. organelles that resulted from one heterotrophic bacteria engulfing another
  11. 20. all of the biotic and abiotic things within a given area
  12. 21. type of selection in which the 2 extreme traits are both selected for
  13. 23. the primary animal Darwin studied to come up with his idea of natural selection
  14. 25. organisms without membrane-bound organelles
  15. 26. differences within a population that evolution acts upon
  16. 27. type of selection in which one extreme trait is selected against
  17. 28. the strongest line of evidence to show 2 organisms are very closely related
  18. 29. evolution with small changes that occur over a long period of time with many generations
  19. 31. first organisms to do photosynthesis and put oxygen in the atmosphere