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(B) When a heterozygous tall plant $(Tt)$ is self-pollinated,the cross is $Tt 	imes Tt$.According to the Law of Segregation,the alleles $T$ and $t$ s

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Segregation

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(B) When a heterozygous tall plant $(Tt)$ is self-pollinated,the cross is $Tt 	imes Tt$.According to the Law of Segregation,the alleles $T$ and $t$ separate during gamete formation.The resulting $F_2$ generation genotypes are $1 TT$ (Homozygous tall),$2 Tt$ (Heterozygous tall),and $1 tt$ (Homozygous dwarf).The phenotypic ratio is $3$ tall : $1$ dwarf.This reappearance of the dwarf trait in the $F_2$ generation,which was hidden in the $F_1$ generation,confirms the Law of Segregation.

If a plant heterozygous for tallness is selfed,the $F_2$ generation has both tall and dwarf plants. This proves the principle of

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