Assertion: The pink coloured flowers appear in F2 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.

Question

Assertion: The pink coloured flowers appear in F2 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. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

In Mirabilis jalapa (four o'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 F1 generation have pink flowers. If the latter are selfed, the plants of F2 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.

Q. Assertion : The pink coloured flowers appear in F2​ 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.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. 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.