I'm not sure. At the petshop that I am soon to be working at, they have a cage that reads:
Male
Leopard Gecko
Het

But it doesn't state what "Het" it is?! And, most people don't know what het means, like I went to a reptile show and it said "het for albino" on a cage, and some one asked me what het was.

Anyways, I'm not sure. That sounds like a good question!