Principles of Evolution

3. The generation of new species from preexisting ones to the most important requirement for a population to be considered a species (two words)
5. Hybrid polyploid individuals
6. Georges Cuvier-father of
7. In Lamarck's theory of evolution, change was based on the inheritance of _________ characteristics
8. Independently arrived at the same theory of evolution as Darwin
12. Wrote Principles of Geology
13. Reproductive isolation that negatively affects the viability and fertilization of hybrids
15. A condition where a gain or loss of chromosomes gives a complement that is less or more than 2n
16. Spontaneous changes in genes or chromosomes
17. Credited with proposing the theory of evolution in 1859 (two words).
18. The transfer of genes from one population's gene pool to that of another - Gene flow Remains or imprints of early life-forms preserved in rock

1. Kind of selection that occurs when the environment is relatively constant for long period of time
2. Species occupying the same range
4. Darwin's idea that the struggle for survival was based on nature, permitting only the fittest organisms to breed (two words)
9. Species development through the hereditary transmission of small variations from generation to generation
10. The breeding condition required for Hardy-Weinberg equilibrium
11. Reproductive isolation that inhibits mating and egg fertilization
14. Theorized on the principle of use and disuse
15. Variations that are beneficial to organisms in certain environments, contributing to their survival
16. An example of hybrid sterility