Assertion : In Mirabilis,selfing of F_1 pink | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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

In the phenomenon of incomplete dominance observed in $Antirrhinum$ $majus$ (Snapdragon),what is the phenotypic ratio of the progeny in the $F_2$ generation?

In incomplete dominance,which ratio does not match with Mendel's monohybrid cross?

The synthesis of starch in pea seeds is controlled by a single gene. This gene has two alleles,$B$ and $b$. If the size of the starch grain is considered as the phenotype,what type of inheritance does this represent?

In $Mirabilis \text{ jalapa}$, the phenotypic ratio of red : pink : white flowers in the $F_2$ generation is ....

Which of the following phenomena is observed in the plant $Mirabilis \text{ } jalapa$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

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