Question

Tallness (T ) in snapdragons is dominant to dwarfism (t ), while red (R ) flower...

Tallness (T ) in snapdragons is dominant to dwarfism (t ), while red (R ) flower color is incompletely dominant to white (R' ). The heterozygous condition results in pink (RR' ) flower color. The genes for these traits occur on separate chromosomes. A dwarf, red snapdragon is crossed with a plant homozygous for tallness and white fowers.

a) Determine the genotypes of the parents.

b) Determine all the types of gametes each parent can produce.

c) Complete the Punnett square to show all the possible genotypes for offspring of the cross. (The Punnett square is 4 x 4).

d) List the genotypic ratios of the offspring.

e) List the phenotypic ratio of the offspring.

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