In cattle, R1R1 is red, R2R2 is white, R1R2 is roan. 1) There is a roan bull, and cows – all three colors. What is the probability of a roan

In cattle, R1R1 is red, R2R2 is white, R1R2 is roan.
1) There is a roan bull, and cows – all three colors. What is the probability of a roan calf appearing in each of the three possible crosses?
2) What genotype do individuals have if only red calves are born from their crossing?

1) In all crosses, the probability of a roan calf is 1/2; 2) genotype of crossed animals R1R1.

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