Assertion : The pink coloured flowers appear in `F_(2)` generation of plant Mirabilis jalapa
Reason : This is observed due epistatic suppression of white colour alleles in one of parental flowers by red colour alleles

Answer

C

Explanation

In Mirabilis jalapa (four 0' clock) there are two types of flower colour in pure state : red and white. When the two types of plants are crossed, the hybrid or plants of `F_(1)` generation have pink flowers. It the latter are selfed, the plants of `F_(2)` generation are of three types-red, pink and white flowered in the ratio of `1: 2:1`. The pink colour apparently appears due to incomplete dominance of red (dominant) over white (recessive). Thus, pink is differentiated from red and white.