Hypo Leopard Geckos
Because the Hypo label is judged by eye rather than confirmed by a test, you should ask about the breeding history of any animal offered as Hypo or Super Hypo. This morph reduces the black spotting on a leopard gecko's body to ten or fewer marks.
About the Hypo gene
The label Hypo for a leopard gecko means it has been bred to have ten or fewer black spots on the body, while a Super Hypo has none at all. Both labels come from selecting parents for their own spotting, and no single proven gene confirms them, so the animal in front of you is the best evidence the label holds.
Appearance
A Hypo has ten or fewer black spots on the body, excluding the head and tail. If a reduced-pattern animal has more than that, it is sold as a High Yellow. The head and tail commonly keep their spots on a Super Hypo, which has none on the body. A line with no head spots too is sold as a Super Hypo Baldy. The base colour on a Super Hypo is cleaner than a wild-type gecko's markings and ranges from a dull light yellow to a brighter yellow, orange or tangerine. Since the label is a headcount and not a confirmed genotype, ask what breeding results stand behind an animal sold as Hypo or Super Hypo instead of trusting the spot count alone.
Genetics
While the question remains unresolved, Hypo and Super Hypo are often called polygenic because they are made by choosing parents with less spotting. They have also been called incomplete dominant. Pos Hypo and Pos Super Hypo are possibles that are not yet proven when sold. There is no allelic partner or complex for either Hypo or Super Hypo. Super Hypo anchors several named combinations. It pairs with an albino line in Sunglow and Hybino. Creamsicle and Snow Glow add Mack Snow. SHT, SHTCT and SHTCTB stack it with Tangerine, Carrot Tail and Baldy.