AP Biology - Natural Selection
Across
- 1. Analogous adaptations to the same environment.
- 2. A common method of speciation in plants. (hint:4n)
- 4. ___ Effect is an example of genetic drift when disasters eliminate genes from the gene pool.
- 6. An ideal population is in Hardy-Weinberg __.
- 8. Structures with the same evolutionary origin, different function.
- 10. Many forms (ex: blood types).
- 14. Isolation in which the two organisms are anataomically incompatible for reproduction.
- 17. Another name for geographic isolation.
- 18. Changes in the gene pool of a small population due to chance.
- 19. A pattern of speciation in which the new species branches off , most common.
- 21. Isolation that would involve songs, signals, courtship displays etc.
- 26. Developed the idea of use and disuse and inheritance of acquired characteristics.
- 28. For H-W equilibrium to be maintained, there must be random ___.
- 29. Comparative ___ looks at similarities in enzymes, DNA etc.
- 31. Major evolutionary events, like the development of wings or large brains in mammals, mass extinctions.
- 32. Pattern of speciation in which the new species replaces the ancestral species.
- 33. A record of an organism that lived in the geologic past.
- 34. A recent example of natural selection.
- 37. Isolation that involves the egg and sperms ability to fertilize.
- 38. Developed the theory of Natural Selection.
- 40. Comparative ___ looks at bones and muscle similarities, provides proof for evolution.
- 41. When genetic material (ex: pollen) moves between populations. Tends to reduce differences between populations.
- 42. Structures with the same function, different evolutionary origin.
Down
- 1. Produced the first oxygen that eventually gave rise to the ozone layer.
- 3. The study of ancient organisms.
- 5. Comparative ___ looks at the similarities between organisms development to determine relationships.
- 7. The total group of genes in a population at one time.
- 9. Early earth had no ___.
- 11. ___ selection, favors intermediates.
- 12. Numerous species evolving from a common ancester.
- 13. Another name for reproductive isolation.
- 15. ___Effect is an example of genetic drift when few individuals colonize an isolated island.
- 16. For H-W equilibrium to be maintained, a population must be ___.
- 20. ___ selection, humans are picking and chosing the most favorable traits.
- 22. An allele is "fixed" if all members of a population are ___ for the same allele.
- 23. Two name system of classification, based upon relatedness.
- 24. Organisms that can mate and produce fertile offspring.
- 25. ___ selection, both extremes are selected for.
- 27. ___ selection, one extreme or the other is selected for.
- 30. Besides mutations, a very important source of genetic variation.
- 35. Reproductive isolation that involves time.
- 36. Recreated early earth's conditions --> amino acids
- 39. Main source of variation for evolution.