Principles of Evolution

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Across
  1. 2. In Lamarck's theory of evolution, change was based on the inheritance of ________ characteristics.
  2. 3. The situation in which complete sets of chromosomes are gained or lost, giving a chromosome number that is a multiple of n other than 2.
  3. 5. Reproductive isolation that negatively affects the viability and fertilization of hybrids
  4. 7. Remains or imprints of early life-forms preserved in rock
  5. 8. Theorized on the principle of use and disuse
  6. 11. Spontaneous changes in genes or chromosomes
  7. 13. An example of hybrid sterility
  8. 15. Species occupying the same range
  9. 17. Georges Cuvier-father of ____
  10. 18. Hybrid polyploid individuals
  11. 19. The generation of new species from preexisting ones to the most important requirement for a population to be considered a species (two words).
  12. 20. Independently arrived at the same theory of evolution as Darwin
  13. 21. The breeding condition required for Hardy-Weinberg equilibrium
  14. 22. Kind of selection that occurs when the environment is relatively constant for a long period of time
Down
  1. 1. Reproductive isolation that inhibits mating and egg fertilization
  2. 4. Darwin's idea that the struggle for survival was based on nature, permitting only the fittest organisms to breed (two words).
  3. 6. Species development through the hereditary transmission of small variations from generation to generation
  4. 9. Variations that are beneficial to organisms in certain environments, contributing to their survival
  5. 10. Wrote Principles of Geology
  6. 12. A condition where a gain or loss of chromosomes gives a complement that is less or more than 2n.
  7. 14. Credited with proposing the theory of evolution in 1859 (two words).
  8. 16. The transfer of genes from one population's gene pool to that of another