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Grigor Mendel ,in his experiments used garden pea plants to find out the secrets of genetics i.e., the 'gene' . First he cross a plant having different features suppose
1. he cross pollinated the tall plant and a short plant
their genotype must be TT . tt respectively.
its result must be full tall plants ,having genotype Tt [F1 progeny]
2. then he self pollinated the F1 progeny i.e., Tt.Tt
the result was in the ratio 3 is to 1 ,where 3 is for tall plants and 1 is for short plants ..
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