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

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion.
B. If both the assertion and the reason are true but the reason is not a correct explanation of the assertion.
C. If the assertion is true but the reason is false.
D. If both the assertion and reason are false.

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.