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9 January, 10:20

When pea plants from a pure-breeding strain with purple flowers are crossed with pea plants from a pure-breeding strain with white flowers, the F1 offspring all have purple flowers. However, the next generation (the F2 generation) contains plants with purple flowers and plants with white flowers.

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  1. 9 January, 10:48
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    Second generation offspring genotype

    PP, Pp, Pp, pp

    Phenotype of Second generation offspring

    PP and Pp will be purple in color

    and pp will be white in color

    Explanation:

    Let the allele for purple color of flowers be "P" and the allele for white color of flowers be "p"

    Given in F1 generation pure-breeding strain with purple flowers are crossed with pea plants from a pure-breeding strain with white flowers

    Genotype of pure-breeding purple flowers be "PP"

    Genotype of pure-breeding white flowers be "pp"

    Genotype of offspring after first generation cross will be "Pp"

    Second generation cross

    Pp * Pp

    PP, Pp, Pp, pp

    Thus,

    PP and Pp will be purple in color

    and pp will be white in color
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