Question

Tallness (T) in snapdragons is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition results in pink (Rr) 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?

Answer 1

Answer:

The correct answer is - Genotype : 100 heterozygous (TtRr) and

Phenotype: 100% tall pink.

Explanation:

A cross between dwarf red snapdragon (ttRR) and homozygous tall white plant (TTrr) will form gametes tR and Tr. These gametes fuse and form Heterozygous condition for both traits that is TtRr.

TtRr snapdragons will form tall and pink phenotypically as we know T (tall) is dominant over t (dwarf) and heterozygous condition will be tall. But in condition of color Heterozygous form pink flower.

Thus, the genotype of offspring will be TtRr and phenotype will be all tall and pink for better understanding check punnet square.