.. there is a fungus that can cause that, it develops between the layers of skin during ecdysis.. other causes can be small injuries as perhaps from live-feeding or temporary husbandry goofs.. humidity especially.
The chances of it being an expression of some gentic trait are EXTREMELY small.. you would win the lotto first.
With luck, it will shed those out next cycle...
Good luick with that.
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Gus
A. Rentfro
RioBravoReptiles.com
www.riobravoreptiles.com
"Quality is not an accident. Perfectly healthy animals are a minimum requirement.. everything else is just salesmanship" gus