In snapdragons tallness (T) is dominant to dwarfness (t).
Red flowers are produced by RR and white flowers by rr but
the heterozygous Rr is pink. A dwarf red snapdragon is
crossed to a homozygous tall plant with white flowers. What
is the phenotypic ratio of the F1? the F2?



In snapdragons tallness (T) is dominant to dwarfness (t). Red flowers are produced by RR and white..

Answer / sowjanya

dwarf, red snapdragon: ttRR * homozygous tall,white flowers
TTrr
F1: tR, Tr gametes
phenotypic ratio : 1:2:1
F2: TR, Tr, tR, tr gametes
9:3:3:1 .

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