In a Mendelian monohybrid cross, the `F_(2)`-generation shows identcal genotypic and phenotypic ratios. What does it tell us about the nature of alleles involved? Justify your answer.

Explanation

**Step-by-Step Solution:**

1. **Understanding Monohybrid Cross**: In a monohybrid cross, we are examining the inheritance of a single trait, which is controlled by two alleles (one from each parent). For example, in pea plants, we can have a dominant allele (T) for tallness and a recessive allele (t) for dwarfness.

2. **F1 Generation**: When we cross two purebred plants (TT and tt), all offspring in the F1 generation will have the genotype Tt (heterozygous) and exhibit the dominant phenotype (tall).

3. **F2 Generation**: When the F1 generation (Tt) is self-crossed (Tt x Tt), we can use a Punnett square to determine the genotypes and phenotypes of the F2 generation. The expected genotypes will be:
- TT (homozygous dominant)
...