In cattle, hornlessness (hornlessness) and black coat color dominate over horniness and red color. When crossing a hornless black bull with three red hornless cows, the calves turned out to be all black, but from two cows the offspring are always hornless, and from the third – both hornless and horned. Identify the genotypes of the bull and cow.
Bull genotype AaBB, genotype of two cows giving hornless offspring – AAbb, genotype of a cow giving both hornless and horned offspring – Aabb.
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