Human Genetics for the Social Sciences
Interactive Learning Exercises


Note Well: These are a series of java applets that are under development and being tested for use with upperclass undergraduates and beginning graduate students. Please feel free to use them. Also, these applets run well under recent versions of Internet Explorer (4.5 for MacOS and 5.0 for Windows) but may not run under Netscape. Suggestions on how to improve them and inspirational ideas on new applets are greatly appreciated. Contact

Gregory Carey
Department of Psychology and
Institute for Behavioral Genetics
University of Colorado
Boulder CO 80309-0345 USA
phone: 303-492-1658
fax: 303-492-2967

Mendelian Transmission:
Offspring from the matings on ABO blood groups
Offspring from the matings on Rh blood groups

Gametes under linkage
Linkage pedigrees

Understanding heritability:
Heritability: Introduction (text only)
Heritability I: Scatterplots.
Heritability II: Environmental variation around a genotypic value.
Heritability III: Culture and heritability.
Heritability IV: Between-group Heritability.

Computing heritability annd environmentability:
The Twin Method

Understanding the threshold model:
Threshold Models: Background (text only)
Threshold I: Introduction to the Threshold Model
Threshold II: Heritability and the Threshold Model
Threshold III: Effects of a Changing Environment
Threshold IV: The Correlation in Liability
Threshold V: Estimating the Correlation in Liability

Genetic Variance Components for a Single Locus
Single Locus Variance Components

Gene-Environment Interaction
Gene-Environment Interaction-I: Sensitivity to the Environment

Natural Selection 1: Selection for a multifactorial trait
Natural Selection 2: Selection on a single locus (not working correctly yet)
Genetic Drift

Set Point Models:
Set Point 1: Ordinary set point model
Set Point 2: Model with an extreme environmental event

HGSS Home Page

greg carey
Date Last Modified: 9/27/00