Evolution

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Across
  1. 4. drift/ Changes in allele frequency in a small population that is due to random chance and don't follow the laws of probability
  2. 9. the formation of new and distinct species in the course of evolution.
  3. 11. selection/ Breeding by humans of plants or animals with certain useful traits
  4. 14. Type of selection in which individuals at both ends of the distribution curve have higher fitness than those near the middle
  5. 17. A change in DNA sequence caused by a mistake in DNA replication or exposure to radiation or chemicals
  6. 18. Natural differences among individuals in a species
  7. 20. isolation/ is the reduction or cessation of reproduction between members of different species compared to that seen between individuals of the same species.
  8. 21. One of the two geologists that proposed that the Earth has changed over millions of years and the processes that caused the change is still happening
  9. 23. organisms that occupy a territory
  10. 24. Weinburg/ Principle or idea that allele frequency will remain constant unless one or more factors cause those frequencies to change
  11. 26. Type of selection where individuals near the center of a distribution curve have higher fitness than those at the extremes
  12. 27. Organ with little or no known function such as an appendix
  13. 29. Type of evolution by which organisms evolve differences when they are isolated in different environments
  14. 30. A group of one type of reproductively isolated organisms
Down
  1. 1. sequence of event that is involved in the development of a species
  2. 2. effect/ the reduced genetic diversity which results when a population is descended from a small number of colonizing ancestors.
  3. 3. Structures that have developed from the same embryonic tissue but have different functions
  4. 5. Type of evolution in which unrelated organisms independently evolve similarities when adapting to similar environments
  5. 6. an English economist that reasoned that if the human population kept growing unchecked that there would not be enough food and space
  6. 7. Preserved remains of an ancient organism
  7. 8. isolation/ occurs when populations of the same species begin to develop different behaviors that are not recognized or preferred by members in another population
  8. 10. a French naturalist who hypothesized that organisms acquire traits during their lifetime through use or disuse which can be passed on to their offspring
  9. 12. conforming to new conditions
  10. 13. Effect/ A change in allele frequencies due to the migration of a subgroup of a population to a new place
  11. 15. Type of selection in which individuals at one end of the distribution curve have higher fitness than individuals in the middle or at the other end
  12. 16. pool/ All the genes, and alleles in a population
  13. 19. Selection/ Also called survival of the fittest
  14. 22. Naturalist who gave Darwin the incentive to publish his ideas about evolution by writing an essay that suggested similar ideas
  15. 25. Islands that Darwin visited on his voyage on the Beagle that leads him to think about how organisms change over time
  16. 28. equilibrium/ A situation in which the allele frequencies in a population do NOT change and the population does NOT EVOLVE