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Punnett Squares, Phenotypes, and Genotypes in Biology Class (Mrs. Causey + Mrs. Summerlin - 3.2.17)


In this monohybrid genetics activity, students in Mrs. Lee Causey and Mrs. Stephanie Summerlin’s classes at C.A. Gray examined plastic eggs that had been labeled with genotypes for the egg and sperm represented by each half of the egg. Students created punnett squares and performed crosses to determine what offspring would be possible from each cross. After creating punnett squares, students determined the ratio for possible phenotypes and genotypes represented by each cross. Within each egg were jellybeans representing the correct phenotypes for each cross.