Assertion : In Mirabilis,selfing of F_1 pink | vedclass

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Question

(A) In $Mirabilis$ $jalapa$ (four o'clock plant),flower colour exhibits incomplete dominance.When $F_1$ pink flowered plants $(Rr)$ are selfed,the $F_

Vedclass · Accepted Answer

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

Vedclass · Answer

(A) In $Mirabilis$ $jalapa$ (four o'clock plant),flower colour exhibits incomplete dominance.When $F_1$ pink flowered plants $(Rr)$ are selfed,the $F_2$ generation results in a phenotypic and genotypic ratio of $1:2:1$.The ratio is as follows:$1$ $RR$ (Red) : $2$ $Rr$ (Pink) : $1$ $rr$ (White).Since both the phenotypic ratio ($1$ Red : $2$ Pink : $1$ White) and the genotypic ratio ($1$ $RR$ : $2$ $Rr$ : $1$ $rr$) are identical $(1:2:1)$,the Assertion is correct.This occurs specifically because the gene for flower colour shows incomplete dominance,making the Reason the correct explanation for the Assertion.

Assertion : In $Mirabilis$,selfing of $F_1$ pink flower plants produces same phenotypic & genotypic ratio.
Reason : Flower colour gene shows incomplete dominance.

Similar Questions

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Assertion : In $Mirabilis$,selfing of $F_1$ pink flower plants produces same phenotypic & genotypic ratio.Reason : Flower colour gene shows incomplete dominance.