Across
- 8. ____-patric speciation where a species coexists but does not reproduce due to behavior or time
- 10. ___-patric speciation where two populations are separated physically by geographic barriers
- 11. change in allele frequencies of a population due to chance events
- 12. characteristic that increases an organism's chance of survival
- 13. the "father" of evolution
- 14. an unborn or unhatched offspring in the process of development; can be used to compare organisms
- 16. when the environment cannot sustain the amount of individuals; causes competition for resources and mates
Down
- 1. diversity in gene frequencies for different traits which makes everyone different
- 2. the type of isolation that causes the inability of a species to breed successfully
- 3. the remains or impression of a prehistoric organism; sometimes preserved
- 4. disappearance of a species from all parts of its geographical range
- 5. the theory that organisms have grown and developed from past organisms over time
- 6. formation of new species from a common ancestor
- 7. when speciation occurs over long periods of time rather than by sudden major changes
- 9. the process through which populations of living organisms adapt and change to survive
- 11. the transfer of alleles or genes from one population to another
- 15. ____ acids which form a protein; sequences can be used to compare species