* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Genetic Change - Minneota Public Schools
Biology and consumer behaviour wikipedia , lookup
Deoxyribozyme wikipedia , lookup
Gene expression programming wikipedia , lookup
Designer baby wikipedia , lookup
Heritability of IQ wikipedia , lookup
Genetic engineering wikipedia , lookup
Public health genomics wikipedia , lookup
Genetic testing wikipedia , lookup
Behavioural genetics wikipedia , lookup
Dual inheritance theory wikipedia , lookup
Medical genetics wikipedia , lookup
History of genetic engineering wikipedia , lookup
Genome (book) wikipedia , lookup
Human genetic variation wikipedia , lookup
Polymorphism (biology) wikipedia , lookup
Koinophilia wikipedia , lookup
Group selection wikipedia , lookup
Genetic drift wikipedia , lookup
Name ______________________________ Class___________________Date__________________ Skills Worksheet Directed Reading Section: Genetic Change In the space provided, write the letter of the description that best matches each term. _____ 1. genetic equilibrium _____ _____ _____ _____ _____ _____ _____ a. the movement of alleles into and out of a population 2. gene flow b. one of the most powerful agents of genetic change 3. nonrandom mating c. eliminates individuals with average phenotype values 4. genetic drift d. a change in allele frequency because of random occurrences 5. mutation e. the state of a population in which no genetic change occurs 6. natural selection f. the mechanism that drives evolution 7. stabilizing selection g. individuals show preferences in the choice of breeding partners 8. disruptive selection h. eliminates individuals that have alleles for any extreme type In the space provided, explain how the terms in each pair are related to each other. 9. gene flow, genetic drift _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 10. mutation, natural selection _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 11. directional selection, stabilizing selection _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Biology 3 Population Genetics and Speciation Name ______________________________ Class___________________Date__________________ Directed Reading continued Read each question, and write your answer in the space provided. 12. What are the five forces of genetic change? _______________________________________________________________ _______________________________________________________________ 13. What does the Hardy-Weinberg principle predict? _______________________________________________________________ _______________________________________________________________ 14. Explain why natural selection does not act directly on genes. _______________________________________________________________ _______________________________________________________________ 15. Explain how sexual reproduction affects evolution. _______________________________________________________________ _______________________________________________________________ 16. What effect does nonrandom mating have on the frequency of alleles in a population? _______________________________________________________________ _______________________________________________________________ 17. Explain how natural selection is limited. _______________________________________________________________ _______________________________________________________________ 18. Describe directional selection and give an example. _______________________________________________________________ _______________________________________________________________ 19. Describe stabilizing selection. _______________________________________________________________ _______________________________________________________________ 20. What is disruptive selection? _______________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Biology 4 Population Genetics and Speciation