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21 April, 21:25

What percentage of offspring from a cross between a homozygous type A parent with a heterozygous Type A parent is expected to contain the I allele

a) 100%

b) 50%

c) 75%

d) 25%

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  1. 21 April, 21:50
    0
    The correct answer is option B, 50%

    Let us take the following case:

    Genotype of heterozygous parent - (Aa)

    Genotype of homozygous parent - (aa)

    Allele I - (Aa)

    Allele II - (aa)

    The cross between the two is shown below:

    Aa X aa

    Aa, Aa, aa, aa

    There are 50 % Aa, and 50 % aa allele.

    Thus, the allele I (Aa) is 50 %.
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