(C) The observed ratio of $73.97\%$ tall and $26.03\%$ dwarf is approximately $3:1$.According to Mendel's law of segregation,a phenotypic ratio of $3:

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Hybrid tall and hybrid tall plant

(C) The observed ratio of $73.97\%$ tall and $26.03\%$ dwarf is approximately $3:1$.According to Mendel's law of segregation,a phenotypic ratio of $3:1$ in the $F_2$ generation is obtained when both parents are heterozygous (hybrid) for the trait.Cross: $Tt \times Tt \rightarrow TT, Tt, Tt, tt$.Genotypes: $1$ $TT$ (pure tall),$2$ $Tt$ (hybrid tall),$1$ $tt$ (pure dwarf).Phenotypes: $3$ tall $(75\%)$ and $1$ dwarf $(25\%)$,which matches the experimental data.

Class 12 Biology Principles of Inheritance and Variation Inheritance of one gene

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When experimenting with the factor of tallness in $Pisum$ $sativum$,Mendel obtained the results $73.97\%$ tall and $26.03\%$ dwarf from one of the crosses. This shows that the parents are:

A
Hybrid tall and pure dwarf plant
B
Hybrid tall and pure tall plant
C
Hybrid tall and hybrid tall plant
D
Pure tall and pure dwarf plant

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Principles of Inheritance and Variation

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Inheritance of one gene

In Mendel's monohybrid cross experiment,the phenotypic ratio is $P$ and the genotypic ratio is $Q$. Select the correct option for $P$ and $Q$.
$\quad \quad \quad P \quad \quad \quad Q$

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$A$ cross between $AaBB$ and $aaBB$ produces which type of genotype?

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$A$ man homozygous for brown eye colour marries a lady heterozygous for brown eye colour. Brown eye colour is dominant over blue. What will be the phenotype of their children?

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If a dwarf pea plant was treated with Gibberellic acid,it grew as tall as a pure tall pea plant. If this treated plant is crossed with a pure tall plant,then the phenotypic ratio of the offspring is likely to be:

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$A$ pure tall garden pea plant is crossed with a pure dwarf garden pea plant. When the $F_1$ generation plants are self-pollinated,the resulting genotypic ratio is:

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When experimenting with the factor of tallness in $Pisum$ $sativum$,Mendel obtained the results $73.97\%$ tall and $26.03\%$ dwarf from one of the crosses. This shows that the parents are:

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In Mendel's monohybrid cross experiment,the phenotypic ratio is $P$ and the genotypic ratio is $Q$. Select the correct option for $P$ and $Q$.$\quad \quad \quad P \quad \quad \quad Q$

$A$ cross between $AaBB$ and $aaBB$ produces which type of genotype?

$A$ man homozygous for brown eye colour marries a lady heterozygous for brown eye colour. Brown eye colour is dominant over blue. What will be the phenotype of their children?

If a dwarf pea plant was treated with Gibberellic acid,it grew as tall as a pure tall pea plant. If this treated plant is crossed with a pure tall plant,then the phenotypic ratio of the offspring is likely to be:

$A$ pure tall garden pea plant is crossed with a pure dwarf garden pea plant. When the $F_1$ generation plants are self-pollinated,the resulting genotypic ratio is:

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In Mendel's monohybrid cross experiment,the phenotypic ratio is $P$ and the genotypic ratio is $Q$. Select the correct option for $P$ and $Q$.
$\quad \quad \quad P \quad \quad \quad Q$