Question about morphs.

Im still fairly new to reptile morphs, so theres a few things I get confused over. I understand the basics, but I thought of something that left me wondering...

Lets say you have a Blizzard that is Het for Patternless.. Its morph, and what it is Het for would be simple recessive.

However, this confuses me. How is it that you can even get this? Both traits are recessive, so what makes it a blizzard? Is blizzard simply a little more dominant than Patternless? Is it completely random as to which trait will be more dominant? And when using a punnet square, is there any way to figure out what the offspring will be since they are both recessive genes?

Thanks.