Across
- 3. as skull size increases, brain size _______
- 5. theory of evolution called periodic catastrophes
- 6. small genetic changes occur slowly over time
- 10. disproved Lamarck, said changes must occur in reproductive cells to be passed on
- 11. differences between individual members of a population
- 12. structure that is inherited, but reduced in size and often unused
- 15. habitat and role an organism plays in its environment
- 16. comparative ________ is evidence for evolution by looking at early developmental stages
- 20. studied human population and said that when population exceeds resources, disaster limits growth of population
- 21. _______ and Eldridge credited with the theory of punctuated equilibrium
- 22. in Darwin's theory of natural selection, he said individuals surviving are those with favorable _________
- 24. type of evidence for evolution which involves looking at the genetic codes of organisms
- 26. Darwin's theory of evolution
- 28. organisms of the same species can mate and produce ___ offspring
- 31. change over time
- 32. variety and abundance of life in an area
- 33. theory that populations have long periods of stability, then brief periods of rapid change, called ____ equilibrium
- 35. similar structures that have a different function, but the species share a common ancestor.
- 36. created a hypothesis that life began in earth's early oceans, the primordial soup
- 37. when humans control breeding of organisms it is called ____ selection
- 38. movement of individuals can disrupt the genetic equilibrium
Down
- 1. disproved theory of spontaneous generation, said new life comes from life already here
- 2. evolution of one or more species from a single ancestor species
- 4. structures that have similar functions, but different ancestors
- 7. inherited trait that increases a population's chance of survival
- 8. adaptive _______ is when a species evolves into several different forms due to moving to a different environment
- 9. said organisms constantly improving themselves, use and disuse and inheritance of acquired characteristics
- 13. random change in allele frequency, happens in small populations due to chance
- 14. one reason why there are gaps in fossil record, because most organisms never get _______
- 17. 2 species evolve in response to changes in each other over time
- 18. type of evolution that produces similar structures in organisms located in different regions
- 19. preserved remains or imprints of ancient organisms
- 23. Darwin observed that each finch had a different niche and were actually different _________
- 25. theory that mitochondria and chloroplasts were once free living cells
- 27. ___ and Miller tried to support Oparin's hypothesis, but formed amino acids (not life)
- 29. Darwin said gradual changes in earth influence changes in organisms, based on work of Charles _____
- 30. change in the sequence of DNA
- 34. family tree showing how organisms are related