Biology 30
Hardy-Weinberg Principle
Information
Major Text: McGraw-Hill Ryerson Inquiry into Biology, Chapter 19.
Lab Exercises: None
Evaluation: There is a project that you need to complete to get credit for these units. Pick up the project from the science resource centre. Please note that Hardy-Weinberg concepts will also appear on the test for Population Dynamics.
If you are not satisfied with your mark on this project, you will have the opportunity to upgrade this by writing a quiz in the testing centre. See a teacher for permission after reviewing your project.
Introduction: Evolution occurs when a population adapts to its environment through natural selection. As the population changes, so must the genetics of the population change. In these units you will learn about the factors that can influence the gene pool of a population.
Objectives: When you have completed the learning activities for this unit you will be expected to address the following:
1. Differentiate between a population and a community. (pages 678-680)
2. Distinguish between genotype frequency, phenotype frequency, and allele frequency.
(pages 678-680)
3. List the 5 conditions that must be met for the Hardy-Weinberg principle to be true.
(page 681)
4. Solve problems using the Hardy-Weinberg equations. (pages 680-683)
5. Give an example of how microevolution can change the allele frequency of a
population. (pages 684-685)
6. Explain why a reduction in the genetic diversity of a population is detrimental to that
population and the role that mutations cause in expanding genetic diversity. (pages
689-690)
7. Explain how gene flow can alter allele frequencies. (page 691)
8. Explain how non-random mating can alter allele frequencies. (pages 691- 693)
9. Explain how genetic drift can alter allele frequencies. (page 693)
10. Describe the founder effect and the bottleneck effect. (page 694)
11. Explain how natural selection can affect allele frequencies. (pages 695-696)
12. Explain how human activities can affect the genetic diversity of a
population. (pages 695-696)
Learning Activities: When doing the readings for this unit, take notes as you see fit. Pay close attention to bold terms and diagrams. The practice questions at the end of each section may be helpful.
1. Read chapter 19 in the textbook. You will be responsible for this information for your diploma exam. Take notes as you see fit.
2. Do as many of the review questions from the text as you find necessary to master the material. The answers to all textbook questions can be found on D2L. Hardy-Weinberg Text Answers
3. Vocabulary check: Be able to define the following terms:
population
community
gene pool
genotype frequency
phenotype frequency
allele frequency
Hardy-Weinberg principle
genetic equilibrium
microevolution
genetic diversity
mutation
gene flow
genetic drift
founder effect
bottleneck effect
4. Attend the optional seminars for this topic. The schedule can be found on the white board in the science resource centre. The seminar schedule is also posted on D2L. The seminar handouts are available in the science resource centre and on D2L. If you can’t make the seminar, check out the seminar clip on D2L related to this topic.
5. For some additional instructions on how to do Hardy-Weinberg Math, you can watch this video. Hardy-Weinberg Math. To watch the video you need to download the free loom app.
5. If you can’t make the seminar you have another review option. Each topic on D2L has video seminar clips that you can review on your own time. As well, check out the Khan Academy videos and Crash Course videos related to this topic. Links to these are found on D2L. Please note that these videos are not made specifically for Bio 30 in Alberta so in some cases there is more or less information than you need for this course, but they are very helpful for understanding the topic. H-W Video Links
6. Go to the science resource centre and pick up the Bio 30 Hardy-Weinberg Assingment. This will be your evaluation for these units. Complete the assignment and hand it in at the science desk.
It is also found here: H-W Project
7. There is a self-test available in this learning guide to help you prepare for your diploma exam.
Evaluation: Your mark for these units will be your mark on the above assignment. As well, please note that Hardy-Weinberg concepts from these units will be tested on the next exam for Population Dynamics.