evolution
Across
- 4. remnants of an organ or structure that functioned in an earlier ancestor (ex. wisdom teeth or tail bones)
- 7. theory that states that the geologic processes that shape Earth are uniform through time
- 9. all of the individuals of a species that live in the same area
- 12. inherited trait that is selected over time because it allows organisms to better survive in their environment
- 13. measure of an organism's ability to survice and produce offspring relative to other members of a population
- 14. principle that states that the changes in landforms result from slow changes over a long period of time
- 16. group of organisms so similar to one another that they can breed and produce fertile offspring
- 17. the study of the distribution of organisms around the world
- 18. pathway of natural selection in which intermediate phenotypes are selected over phenotypes at both extremes
- 19. observable change in the allele frequency of a population over a few generations
Down
- 1. proportion of one allele, compared with all the alleles for that trait, in the gene pool
- 2. study of fossils or extinct organisms
- 3. differences in physical traits of an individual from the group to which it belongs
- 5. process by which humans modify a species by breeding it for certain traits
- 6. body part that is similar in structure on different organisms, but performs different functions (ex. limbs of humans and bat wings)
- 8. trace of an organism from the past
- 10. body part that is similar in function as a body part of another organism, buff is structurally different (ex. moth wings and bird wings)
- 11. theory that states that natural disasters such as floods and volcanic eruptions shaped Earth's landforms and caused the extinction of some species
- 14. collection of alleles found in all of the individuals of a population
- 15. pathway of natural selection in which one uncommon phenotype is selected over a more common phenotype