If you draw the chart that crosses which genes each offspring would receive, the answer would be Rr, rr, rr and rr. With that you would say there is a 1 in 4 chance of getting Rr and 3 in 4 chances of getting rr.
Explanation:If a heterozygous plant for seed color (Rr) is crossed with a homozygous recessive plant (rr), what is the probability of each seed color being produced? ... The probability will be ½ for each seed color.