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13 July, 13:16

In a species of wild lupine flower, the smooth seed allele (S) is completely dominant over the wrinkled seed allele (s). If the alleles for height are incompletely dominant, such that TT is tall, Tt is intermediate, and tt is short, what will result from crossing a smooth-seeded short (SStt) plant with a wrinkled-seeded tall (ssTT) plant?

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  1. 13 July, 16:29
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    Genotype of offspring - SsTt

    Phenotype - Smooth and intermediate

    Explanation:

    Given -

    smooth seed allele (S) is completely dominant over the wrinkled seed allele (s)

    Such that SS and Ss will be smooth and ss will be wrinkled

    And

    Alleles for height are incompletely dominant

    TT - tall

    Tt - intermediate

    tt - short

    Genotype of parents

    SStt - Gametes St, St, St, St

    and

    ssTT - Gametes sT, sT, sT, sT

    St St St St

    sT SsTt SsTt SsTt SsTt

    sT SsTt SsTt SsTt SsTt

    sT SsTt SsTt SsTt SsTt

    sT SsTt SsTt SsTt SsTt

    Genotype of offspring - SsTt

    Phenotype - Smooth and intermediate
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