Fast Plants pk of 200. F1 and F2 of wildtype X rosette (ros/ROS xros/ROS) - F1 is homogeneous wildtype and the F2 segregates 3:1 for wildtype and rosette. In addition, the F2 rosette will segregate for purple and non-purple stem providing a dihybrid with a 9:3:3:1 ratio pk of 2