If a dwarf variety of pea plant was treated with GBA, it grew as tall as the pure tall pea plant. On selfing the phenotypic ratio is likely to be
A
All dwarf
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B
All tall
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C
50 % tall
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D
75 % tall and 25 % dwarf
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Solution
The correct option is A All dwarf Treatment with GBA (Gibberelic acid) affects only the phenotype. However, the genotype of the dwarf plant (tt) remains the same and is not affected by GBA treatment. Thus, on selfing this GBA treated plant produces all dwarf plants.