F₂ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1

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4.Principles of Inheritance and Variation

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$F_2$ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as $1 : 2 : 1$. It represents a case of

codominance

dihybrid cross

monohybrid cross with complete dominance

monohybrid cross with incomplete dominance.

(AIPMT-2012)

Solution

(d): The inheritance of flower colour in the dog flower (snapdragon or Antirrhinum $sp$.) is a good example which shows incomplete dominance. In a cross between truebreeding redflowered $(RR)$ and truebreeding whiteflowered plants $(rr)$, the $F_1\ (Rr)$ was pink. When the $F_1$ was selfpollinated the $F_2$ resulted in the following ratio, $1\ (RR)$ Red : $2\ (Rr)$ Pink : $1\ (rr)$ White. Here the genotype ratios were $1 : 2: 1$ as in any Mendelian monohybrid cross, but the phenotype ratios had changed from the $3 : 1$ dominant: recessive ratio to $1 : 2 : 1.$

Standard 12

Biology

In Mirabilis jalapa, when homozygous red-flowered and white-flowered plants are crossed, all $F_1$ plants have pink-coloured flowers. In $F_2$ produced by selfing of $F_1$ individuals, red, pink and white flowered plants appear respectively in the ratio of or What will be the ratio in $F_2$ generation if red-flowered variety of Mirabilis jalapa is crossed with white-flowered variety

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A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

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(NEET-2024)

$F_2$ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as $1 : 2 : 1$. It represents a case of

Solution

Similar Questions

$RR$ $(Red)$ is crossed with $ww$ $(white)$, all the $Rw$ offsprings are pink. This is an indication that $R$ gene is

Incomplete dominance is found in

In case of incomplete dominance in $F_2$ generation

A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

$F_2$ generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as $1 : 2 : 1$. It represents a case of

Solution

Similar Questions

$RR$ $(Red)$ is crossed with $ww$ $(white)$, all the $Rw$ offsprings are pink. This is an indication that $R$ gene is

Incomplete dominance is found in

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A pink flowered Snapdragon plant was crossed with a red flowered Snapdragon plant. What type of phenotype/s is/are expected in the progeny?

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