A pure dwarf plant was subjected to X-ray treatment, which mutated them to reach the height of a pure tall plant. This new plant was crossed with a hybrid tall. What will be the result of progeny?

All tall

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Tall and dwarf in 1 : 1 ratio

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All dwarf

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Tall and dwarf in 2 : 1 ratio

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Solution

The correct option is A All tall
By subjecting to x -rays, dwarf genes undergoes mutations and become dominant genes

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If a pure tall plant is crossed with a pure dwarf plant the offsring will be
(a) all tall (b) all dwarf (c) 3 tall 1 dwarf (d) 50% tall 50% dwarf

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