What phenotype would you expect from a cross between a red bull and white cow?

The phenotype of the offspring from a cross between a red bull and a white cow would depend on the inheritance pattern of the coat color genes. If the red coat color is dominant over the white, the offspring would likely exhibit a red phenotype. However, if the inheritance follows a codominance pattern, the offspring could display a mixed phenotype, such as roan (a mix of red and white). The specific outcome would ultimately depend on the genotypes of the parents.