In cattle the polled (hornless) condition is dominant over the horned phenotype. A polled bull is bred to thr?

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In cattle the polled (hornless) condition is dominant over the horned phenotype. A polled bull is bred to thr?



In cattle the polled (hornless) condition is dominant over the horned phenotype. A polled bull is bred to three cows. Cow A is horned and the union produces a horned calf. When mated with cow B, which is polled, a horned calf is produced. Cow C is horned and gives birth to a polled calf. 

a) What are the genotypes of the bull and three cows? 

b) What phenotypic ratios do you expect in the offspring of these three matings?



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