BIOLOGY
| 1. Darwin conducted much of his research on __________________________.
2. Darwin’s book, _______________________________ in 1859, presented his ideas on evolution. 3. Darwin’s theory of evolution included ideas such as evolution occurs due to __________________. 4. Darwin’s studies included ________________, who had a common ancestor, but had evolved differently. 5. The half life of radioactive carbon-14 is __________________. 6. _____________________ is a change in species over time. 7. Since the beginning of the earth, about ___________________ ago, it has gone through many changes. 8. __________________ do not believe that species change slowly. 9. Evidence for evolution includes_______________, homologous structures, and similarities/differences in DNA. 10. Darwin predicted that ___________________ would be found to show intermediate stages in the fossil record. 11. Homologous (similar) structures in organisms suggest that organisms had __________________________. 12. A human embryo exhibits gill pouches, a coat of fine fur, and ______________for a certain amount of time. 13. The idea that species change to fit their environment is called ___________________. 14. __________________________ is the process by which organisms better suited to their environment reproduce at a faster rate than those not as well adapted to that environment. 15. Organisms often produce _________ offspring than can survive. 16. The evolution of the long necks of giraffes is an example of________________________. 17. The age of fossils can be determined by the amount of _______________________ in fossil remains. 18. A bone becomes fossilized when its _____________________ is replaced by harder minerals. 19. Kettlewell conducted experiments with __________________________. 20. ________________________ in species is the raw material for natural selection. 21. Populations of the same species that differ genetically because they have adapted to different environments are known as ___________________________. 22. ______________________ is a theory that says that evolution occurs in big steps instead of gradually. 23. People heterozygous for the sickle cell allele are less susceptible to _________________. 24. ESSAY: Give an example of a vestigial organ and explain what the term means. |