If you crossed a true-breeding yellow-seed plant (AA) with a heterozygous yellow-seed plant (Aa), offspring: A)genotypes would be 1 AA:2 Aa. B)genotypes would be 1 Aa:1 aa. C)genotypes would be 1 AA:1 Aa. D)phenotypes would be ¹/₂ yellow-seed plants and ¹/₂ green-seed plants. E)genotypes would be 1 Aa:1 aa and would be ¹/₂ yellow-seed plants and ¹/₂ green-seed plants.

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The true-breeding yellow-seed plant will have the genotype AA and will only produce gametes with the A allele. The heterozygous yellow-seed plant will have the genotype Aa and will produce gametes with both the A and a alleles in equal frequency. Therefore, when crossed, they will produce offspring with genotypes of 1 AA to 1 Aa in a 1:1 ratio.

If You Crossed a True-Breeding Yellow-Seed Plant (AA) with a Heterozygous