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11 June, 21:26

Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic results?

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  1. 11 June, 21:44
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    To solve this question, one can make use of a punnet square to determine the phenotypic ratios:

    A - allele for purple colour

    a - allele for white colour

    Aa X Aa

    Genotypes: 1 AA : 2 Aa : 1 aa

    Phenotypes: 3 Purple flowered pea plants to 1 white flowered pea plant.

    Assuming that this complete dominance, where the A allele, the purple colour is dominant over the lowercase a allele that codes for white colour in the pea plants.
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