Interactive Punnett Square examples. How to use Punnett squares in mendielian genetics Review Games: Punnett Square Practice (61). Review Game Zone Overview. ReviewGameZone.com contains online educational games for school aged TEENs. Drag genes from the left side of the table into the top right box to create the genetic cross. Place the genes on both sides of the "x" symbol. Its about Punnett squares and DNA genetic genes. How DNA works and a easier way to determine the percentage of genes. This feature is not available right now. Please try again later. Learn how traits are passed from generation to generation. Punnett Squares help predict the genes passed to offspring. Dominant and recessive genes.