In the F2 generation of hybridization for a given trait conditioned by a pair of alleles T and t, according to Mendel's first law what are the genotypes of each phenotypical form? How many respectively are the genotypical and phenotypical forms?
In the mentioned hybridization the genotypical forms in F2 will be TT, tt and Tt. Thus there will be three different genotypical forms and two dissimilar phenotypical forms (considering T dominant over t).