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3 October, 01:20

Coat color in a dog breed is determined by incomplete dominance where three colors are produced (Brown, tan and white), and the brown coat allele (B) has incomplete dominance over the white coat allele (b). Which offspring ratio would be expected from a cross between a brown dog and a tan dog?

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  1. 3 October, 04:44
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    Genotypes of the dog color are:

    BB dominant homozygous-brown phenotype

    bb recessive homozygous-white phenotype

    Bb heterozygous-tan phenotype

    Cross between brown and pan dog would be:

    P: BB x Bb

    F1: BB Bb BB Bb

    The ratio would be 1:1 (brown dog:pan dog).
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