The girls on the LPGA would squash all but the top 2000 men golfers in the world. Because there are so few transsexuals, there might be 1 or 2 ( or zero) who could compete in the LPGA.
The only place a man or transsexual might have an advantage is off the tee. The girls are hitting about 240 with the top players hitting about 265-280. Most male college players are hitting about that far with the pros on the tour hitting about 310.
It is not going to that much of an advantage to be transsexual on the LPGA. Especially since 3/4 of the game is about accuracy on the approach shots and consistency in the short game.