Question

$\huge\underline\mathrm{Question-}$

In a pea plant, the trait of flowers bearing purple colour (PP) is dominant over white
colour (pp). Explain the inheritance pattern of F1 and F2 generations with the help of a
cross following the rules of inheritance of traits. State the visible characters of F1 and F2
progenies.

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Answer 1

refer the attachment

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Answer 2

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The cross that is mentioned here is a simple Mendelian monohybrid cross where the selected character is the flower colour.

The dominant allele = purple colour = P

The recessive allele = white colour = p

So, the genotype of parental generation = PP and pp

So, the genotype of the filial generation = Pp, as both the characters segregate and come to each progeny in equal proportions.

The genotype of the gametes of F1 generation = P P p p

So, each can combine to produce four probable combinations where the 2nd and 3rd combination is the same. So, the final F2 genotype = PP Pp and pp

The ratio of the genotypes of the filial generation = 1 : 2 : 1

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