EA PLANT PUNNETT SQUARE WORKSHEET 1) Yellow seeds are dominant over green seeds in pea plants. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing homozygous recessive and homozygous dominant parents. Y Y y Yy Yy y Yy Yy Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________ 2) Green pod color is dominant over yellow pod color in pea plants. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing homozygous dominant and heterozygous parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: __________________________ Phenotypic Ratio: ________ 3) Round seeds are dominant over wrinkled seeds in pea plants. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing homozygous recessive and heterozygous parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________ 4) Smooth pod shape is dominant over constricted pod shape in pea plants. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing homozygous recessive and homozygous dominant parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________ 5) Tall pea plants are dominant over short pea plants. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing heterozygous and heterozygous dominant parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________ 6) The axial flower position is dominant over the terminal flower position. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing heterozygous and homozygous dominant parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________ 7) Gray seed coat color is dominant over white seed coat color. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing homozygous dominant and homozygous dominant parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________ 8) Tall pea plants are dominant over short pea plants. Fill in the Punnett square and determine the expected genotypic and phenotypic ratios from crossing homozygous recessive and homozygous recessive parents. Genotypes: __________________________ Genotypic Ratio: _________ Phenotypes: _________________________ Phenotypic Ratio: _________