Genetics is the study of how characteristics are passed from parents to offspring. Geneticists use Punnett squares to predict the likelihood that offspring will inherit alleles, forms of genes, from their parents. A Punnett square is a box divided into four parts. The alleles of one parent are written across the top of the box. The alleles of the second parent are written along the side. The combination of alleles formed within the four parts predicts the traits of offspring.
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From The Science Teacher's Activity-A-Day. Copyright © 2010 by Johh Wiley & Sons, Inc. All Rights Reserved.
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