Question

name the phenotypes produced in f2 progeny upon self pollination of f1 progeny

Answer 1

Answer:

When the F1 plants in Mendel's experiment were self-crossed, the F2 offspring exhibited the dominant trait or the recessive trait in a 3:1 ratio, confirming that the recessive trait had been transmitted faithfully from the original P parent.

Answer 2

The phenotype produced in F₂ progeny upon self-pollination of F₁ progeny is a 3:1 ratio.

Phenotype is the observable characteristics of organisms resulting from their genotype with the environment. Phenotypes are influenced by the genotype and the environment in which the organisms grow.

Pure tall(TT) and hybrid tall(Tt) have the same phenotype although they have a different genetic combination.

In a monohybrid cross, the phenotype ratio for F₂ generation is 3:1. This can be shown through an example of Mendel's law of dominance,

Parents             Pure tall                       Pure dwarf

                                (TT)                                     (tt)

Gametes          T              T          ×              t                t

Crossing           ↓                ↓                    ↓                   ↓

F₁ generation   (Tt)           (Tt)                   (Tt)              (Tt)   (All hybrid tall)

F₁ gametes        T              t             ×          T                t  

Self-pollination  ↓             ↓                     ↓                 ↓  

F₂ generation   (TT)         (Tt)                  (Tt)              (tt) (3 tall:1dwarf)  

Hence, the phenotype is 3:1 ratio.