In case of incomplete dominance,what is the observation in the $F_2$ generation?

When the progeny obtained in the $F_1$ generation shows the expression of both genes present in its genotype, but the expression is not complete, which of the following characteristics can be applied?

In a Mendelian monohybrid cross,the $F_2$ generation shows identical genotypic and phenotypic ratios. What does it tell us about the nature of alleles involved? Justify your answer.

In Antirrhinum,two plants with pink flowers were hybridized. The $F_1$ plants produced red,pink,and white flowers in the proportion of $1$ red,$2$ pink,and $1$ white. What could be the genotype of the two plants used for hybridization? Red flower color is determined by $RR$,and white by $rr$ genes.

Incomplete dominance is observed in . . . . . . .

In a Mendelian cross,the $F_2$ generation shows that both the genotypic ratio and the phenotypic ratio are the same,i.e.,$1:2:1$. This indicates: