Okay, I'm usually pretty good at genetics, but I'm stumped on this one.

Okay, so how in the world does the punnett square work in this type of situation. I'm using a bumblebee x normal scenario. Okay, so how do I set that up? What do I put for the Bumble bee? Do I put N p* N s* on top and then N N on the side? And when I do, I don't end up with the right results that would give me 25% chance for a bumblebee offspring.\

I might just be really tired, but either way, I refuse to sleep until I know, ha ha

Thanks for any help.