In a Mendelian cross,the F_2 generation shows | vedclass

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(D) In a standard Mendelian monohybrid cross with complete dominance,the phenotypic ratio is $3:1$ and the genotypic ratio is $1:2:1$.However,in cases

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Monohybrid cross with incomplete dominance

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(D) In a standard Mendelian monohybrid cross with complete dominance,the phenotypic ratio is $3:1$ and the genotypic ratio is $1:2:1$.However,in cases of incomplete dominance (e.g.,in $Antirrhinum$ $majus$ or snapdragon),the dominant allele does not completely mask the recessive allele.As a result,the heterozygotes show an intermediate phenotype.Therefore,in the $F_2$ generation of an incomplete dominance cross,the phenotypic ratio becomes $1:2:1$ ($1$ red : $2$ pink : $1$ white),which is identical to the genotypic ratio $(1:2:1)$.

In a Mendelian cross,the $F_2$ generation shows that both the genotypic ratio and the phenotypic ratio are the same,i.e.,$1:2:1$. This indicates:

Similar Questions

In the case of incomplete dominance,what will be the proportion of progeny with the $Rr$ genotype in the $F_2$ generation (in $\%$)?

In which of the following is incomplete dominance observed?

In $Mirabilis$ and $Antirrhinum$ plants,the flowers appear pink in the hybrid $(Rr)$ condition,which is produced by crossing red $(RR)$ and white $(rr)$ parent flowers. This phenomenon is known as:

In a Mendelian cross,the genotypic and phenotypic ratios are identical in the $F_2$ generation. The ratio $1:2:1$ represents which of the following cases?

$A$ : In snapdragon, $F_{1}$ plants do not have red or white flowers.
$R$ : It is intermediate inheritance with neither of the two alleles of a gene being dominant over each other.

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