ClassFlow
Class Flow: Using a Punnett Square
[Free Registration/Login Required] This flipchart show students how to use a Punnett Square to introduce how homozygous and heterozygous genotypes are inherited and how they determine phenotypes.
Palomar Community College District
Probability of Inheritance
A great supplement to help introduce Punnett Squares. It tells how to set them up and how to use them correctly. A sample quiz is offered and feedback is given to help with understanding why an answer is correct or not.
Cold Spring Harbor Laboratory
Dolan Dna Learning Center: Learn About Genetics: Genes & Inheritance
An animation introducing the basic concepts of cells, DNA, recessive inheritance, and Punnett squares.