hi 4 season.
There's a sticky with links at the top of the page in the Crosstalk forum.
RL is dominant over PL, so in a cross of RL X PL, the first generation or F1 will all be RL. In the second generation or F2, the expected ratio is 1/4 PL and 3/4 RL. Two of the three RL still carry the PL gene, but it's not expressed because of RL dominance.
