Foundation
Biology Foundation
Heredity And Variation
Question
When a cross is made between a tall plant with yellow seeds (TtYy) and a tall plant with the green seed (Ttyy), what proportions of phenotype in the offspring could be expected to be
(a) tall and green.
(b) dwarf and green.
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Solution
As given phenotype of TtYy parent, tallness is dominant over dwarfism and yellow seed is dominant over green seeds. Genotype of tall and green progeny will be Ttyy and TTyy, and that of dwarf and green progeny will be ttyy. Proportion of tall and green progeny = 3
Proportion of dwarf and green progeny = 1