When a pure red-flowered (RR) snapdragon plan | vedclass

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(B) In snapdragon ($Antirrhinum$ $sp.$),the inheritance of flower color is an example of incomplete dominance.Incomplete dominance is a phenomenon whe

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Incomplete dominance

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(B) In snapdragon ($Antirrhinum$ $sp.$),the inheritance of flower color is an example of incomplete dominance.Incomplete dominance is a phenomenon where the dominant allele does not completely mask the effect of the recessive allele,resulting in an intermediate phenotype in the heterozygote.Here,the $RR$ (red) genotype and $rr$ (white) genotype produce $Rr$ (pink) in the $F_1$ generation.Upon selfing the $F_1$ $(Rr 	imes Rr)$,the $F_2$ generation shows a genotypic and phenotypic ratio of $1:2:1$ ($1$ $RR$ red : $2$ $Rr$ pink : $1$ $rr$ white),which is characteristic of incomplete dominance.

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