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Population Genetics, Selection, and Evolution

Topic

  • Evolution
  • Natural Selection
  • Population Genetics
  • Science Practices
  • Data Analysis

Resource Type

  • Activities
  • Labs & Demos

Level

High School — GeneralHigh School — AP/IBCollege
Saved By
19 Users
Archived
View in Spanish

Description

This activity has been archived while we produce a more up-to-date version of this activity and the accompanying film. We are hoping the new activity and film will be available by the end of 2021.

In this activity, students use simulations with beads to explore the concepts in the short film The Making of the Fittest: Natural Selection in Humans about population genetics, the Hardy-Weinberg principle, and how natural selection alters the frequency distribution of heritable traits.

Using simple simulations to illustrate these complex concepts provides students with the opportunity to calculate allele and genotype frequencies, graph and interpret data, and design experiments. Part 1 walks students through general Hardy-Weinberg practice problems to establish familiarity with the calculations. Part 2 uses simulations to examine the Hardy-Weinberg principle. Students then analyze their results through a set of questions and graphing. 

The “Resource Google Folder” link directs to a Google Drive folder of resource documents in the Google Docs format. Not all downloadable documents for the resource may be available in this format. The Google Drive folder is set as “View Only”; to save a copy of a document in this folder to your Google Drive, open that document, then select File → “Make a copy.” These documents can be copied, modified, and distributed online following the Terms of Use listed in the “Details” section below, including crediting BioInteractive.

Student Learning Targets

  • Calculate the allele and genotype frequencies of populations using the Hardy-Weinberg equations.
  • Explain the concept of Hardy-Weinberg (genetic) equilibrium and interpret data that do not show Hardy-Weinberg equilibrium.
  • Construct and interpret graphs and tables to deduce the effect that natural selection has on allele and genotype frequencies in populations over time. 
     

Estimated Time

Three 50-minute class periods.

Key Terms

allele frequencies, genotype frequencies, Hardy-Weinberg principle, hemoglobin, heterozygous advantage, malaria, natural selection, red blood cell, sickle cell disease

Terms of Use

The resource is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International license. No rights are granted to use HHMI’s or BioInteractive’s names or logos independent from this Resource or in any derivative works.

Version History

Date Published 03.07.11

NGSS (2013)

HS-LS3-3, HS-LS4-3; SEP2, SEP5, SEP6

AP Biology (2019)

EVO-1.D, EVO-1.H, EVO-1.K, EVO-1.L, SYI-3.D; SP1, SP4, SP5

IB Biology (2016)

10.2

Common Core (2010)

ELA.RST.9–12.7
Math.A-REI-4, Math.A-REI.11; MP1, MP4

Vision and Change (2009)

CC1; DP1, DP2, DP3

Materials

Download Resource Google Folder (Link)
Download Student Handout (PDF) 229 KB
Download Teacher Materials (PDF) 323 KB
Download Student Handout - Español (PDF) 313 KB
Download Teacher Materials - Español (PDF) 381 KB

Additional Materials

  • two colors of beads 
  • container for the parent population
  • calculator 
  • felt-tip marking pen 
  • colored pencils 
  • graph paper or program

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