How does the pattern effect of the Pastel gene generally contrast with the pattern reduction seen in a single-gene Yellow Belly?

Pastel typically enhances pattern contrast while keeping dorsal markings more intact than a Yellow Belly

While both the Pastel and Yellow Belly genes contribute to brightening the base color, their effects on the pattern structure differ notably. The Pastel gene is known for enhancing the contrast between the light ground color and the dark markings, which often results in the dorsal markings remaining relatively more intact and defined compared to the pattern reduction seen in a single-gene Yellow Belly. A Yellow Belly, conversely, is characterized by the structural breaking up and reduction of those dark dorsal markings. Therefore, a keeper identifying a snake needs to observe whether the pattern has been actively reduced (favoring Yellow Belly) or if the markings are clearer and better defined against the brighter background (often favored by Pastel).