I dont think they have a designation for F3xF4. I think each one is to show how far down they have been imbreed to clarify gene transfer and where they show up (ie, skip a generation or two, etc.)
-----
It's just like the story of the grasshopper and the octopus. All year long the grasshopper stored up acorns for winter, while the octopus mooched off his girlfriend and watched tv. And then the winter came, and the grasshopper died, and the octopus stole all his acorns, and he got a race car. Is any of this sinking in?

[ Show Entire Thread ]