Pure tall plants are crossed with pure dwarf | vedclass

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(A) The phenomenon described is the Law of Dominance. In a cross between pure tall $(TT)$ and pure dwarf $(tt)$ plants,the $F_1$ generation consists o

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Dominance

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(A) The phenomenon described is the Law of Dominance. In a cross between pure tall $(TT)$ and pure dwarf $(tt)$ plants,the $F_1$ generation consists of heterozygous tall plants $(Tt)$. When these $F_1$ plants are self-pollinated,the $F_2$ generation exhibits a phenotypic ratio of $3:1$ (tall to dwarf). This occurs because the allele for tallness $(T)$ is dominant over the allele for dwarfness $(t)$,masking its expression in the heterozygous state. This observation is a fundamental aspect of Mendel's Law of Dominance.

Pure tall plants are crossed with pure dwarf plants. In the $F_1$ generation,all plants were tall. These tall plants of the $F_1$ generation were selfed,and the ratio of tall to dwarf plants obtained was $3:1$. This is called:

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