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In the horse, the A locus governs the distribution of pigment in the coat. The A...

In the horse, the A locus governs the distribution of pigment in the coat. The A locus has a series of multiple alleles. These alleles control the following phenotypes: A+ = wild type (bay), A = dark bay (black mane and white tail), a1 = seal brown, a = recessive black. The order of dominance is A+>A>a1>a.

If, in a certain population, the allele frequencies are A+ = 0.4, A = 0.2, a1 = 0.1, and a = 0.3, calculate the expected frequencies of the four possible phenotypes.

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