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(D) In a typical Mendelian monohybrid cross,the $F_2$ phenotypic ratio is $3:1$ and the genotypic ratio is $1:2:1$.However,in the case of incomplete d

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Incomplete dominance

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(D) In a typical Mendelian monohybrid cross,the $F_2$ phenotypic ratio is $3:1$ and the genotypic ratio is $1:2:1$.However,in the case of incomplete dominance (e.g.,flower color in $Antirrhinum$ $majus$ or snapdragon),the dominant allele does not completely mask the recessive allele.In the $F_2$ generation of an incomplete dominance cross,the phenotypic ratio is $1:2:1$ (Red:Pink:White) and the genotypic ratio is also $1:2:1$ $(RR:Rr:rr)$.Thus,both ratios are identical in the $F_2$ generation.

When both the genotype and phenotype ratios are the same in the $F_2$ generation,it is an example of:

Similar Questions

In a Mendelian monohybrid cross,the $F_2$ generation shows identical genotypic and phenotypic ratios. What does it tell us about the nature of alleles involved? Justify your answer.

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

What is the phenotypic ratio obtained in the $F_2$ generation of a snapdragon plant in a monohybrid cross?

In $Antirrhinum$ (Snapdragon),a cross between a white-flowered recessive plant $(ww)$ and a red-flowered dominant plant $(RR)$ results in $180$ plants in the $F_2$ generation. How many of these plants will have the same genotype as the parents?

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

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