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Tallness (T) in snapdragons is dominant to dwarfness (t), and red (CR) flower color is not dominant to white (Cr). The heterozygous condition results in pink (CRCr) flower color.
-A dwarf red snapdragon is crossed with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals?

Question

Quizplus · Accepted Answer

The dwarf parent is ttCrCr and the tall white parent is TTCrCr. The Tt and CRCr alleles would be present in the F1 individuals as both parents contribute one allele each. Therefore, the possible genotypes of the F1 individuals are TtCrCr, TtCRCr, ttCrCr, and ttCRCr. However, the only genotype that would result in pink flowers is ttCRCr. Therefore, the genotype of the F1 individuals is ttCRCr and the phenotype is pink.

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