In cattle, hornlessness (hornlessness) and black coat color dominate over horniness and red color. When crossing a hornless black

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.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.