In a Mendelian experiment, on crossing a pure breeding tall pea plant possessing colored flowers with a dwarf plant with white flowers, Mendel obtained 172 plants in $F_{2}$ generation. What is the phenotype of plants?

96 were tall-coloured, 31 tall-white, 34 dwarf-coloured, 11 dwarf-white

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129 were tall-coloured and 43 dwarf-white

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89 were tall-coloured, 30 tall-white, 41 dwarf-coloured and 12 dwarf-white

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3 were tall-coloured and 1 dwarf-white

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Solution

The correct option is A 96 were tall-coloured, 31 tall-white, 34 dwarf-coloured, 11 dwarf-white
The question is talking about the dihybrid cross of Mendel,
The ratio of dihybrid cross $= 9 : 3 : 3 : 1$
Total progeny of $F_{2}$ generation $= 172$
So, first we should have to calculate the value of single progeny.
$9 + 3 + 3 + 1 = 16$
$172 \div 16 = 10.72 \sim 11$
Single trail is found in $11$ number,
$10.72 \times 9 = 96.75 \sim 96$
$10.72 \times 3 = 32.75 \sim 31 \sim 34$
So almost, $96 : 31 : 34 : 11$
Ratio will be appear.
$96 =$ Tall - coloured
$31 =$ Tall - white
$34 =$ Dwarf - coloured
$11 =$ Dwarf - white
Option (A) is correct here.

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Similar questions

Q. In a plant, gene ‘A’ is responsible for tallness and its recessive allele ‘a’ for dwarfness and gene ‘B’ is responsible for red coloured flower while its recessive allele ‘b’ for white coloured flower. A tall and red-flowered plant with genotype AaBb is crossed with dwarf and red flower with genotype aaBb. What percentage of their offspring would be dwarf white-flowered?

A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers.

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When a tall and red-flowered plant is crossed with a dwarf and white-flowered plant, the phenotype in the progeny is dwarf and white. What will be the genotype of tall and red flowered individual ?

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In a Mendelian experiment, on crossing a pure breeding tall pea plant possessing colored flowers with a dwarf plant with white flowers, Mendel obtained 172 plants in F2 generation. What is the phenotype of plants?

In a Mendelian experiment, on crossing a pure breeding tall pea plant possessing colored flowers with a dwarf plant with white flowers, Mendel obtained 172 plants in $F_{2}$ generation. What is the phenotype of plants?