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The Punnett Tool

In a cross be...

Question

In a cross between two tall pea plants some of the offsprings produced were dwarf. Show with the help of Punett square how this is possible.

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Solution

Gametes T t
T TT Tt
t Tt tt
Parent: TT and tt
Gametes: T, t
F $_{1}$ generation: Tt
Gametes: T, t
F $_{2}$ generation (as shown in Punnett square above)
So, the phenotypic ratio is 3 (tall) : 1 (dwarf)

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During a monohybrid cross involving a tall pea plant with dwarf pea plant, the offspring populations were tall and dwarf in equal ratio. Work out a cross to show how it is possible.

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