In $Antirrhinum$ (Snapdragon),a cross between a white-flowered recessive plant $(ww)$ and a red-flowered dominant plant $(RR)$ results in $180$ plants in the $F_2$ generation. How many of these plants will have the same genotype as the parents?

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

In a Mendelian cross,the genotypic and phenotypic ratios are identical in the $F_2$ generation. The ratio $1:2:1$ represents which of the following cases?

Pure red flower $\times$ Pure white flower $=$ Pink flower. This is an example of:

The presence of the $Bb$ gene in pea plants results in intermediate-sized starch grains. Which phenomenon does this represent?

When a pure red-flowered $(RR)$ snapdragon plant is crossed with a pure white-flowered $(rr)$ plant,the $F_1$ generation produces pink flowers. When this $F_1$ progeny is self-pollinated,the resulting $F_2$ generation ratio is $1$ $(RR)$ red : $2$ $(Rr)$ pink : $1$ $(rr)$ white. This phenomenon can be explained by: