Highway Ball genetics

Can somebody give me anything on this. Is it recessive, dominant, co-dominant. The world of ball pythons stated dominant but somebody was selling a yellowbelly het for highway. Please help with any info.

Thank you

here is a dumbed down answer

the highway is a combo of the yellow belly gene and the gravel gene (which is very similar to a yellowbelly in appearance). the gravel is related to the yellowbelly like a mojave to a lesser.

a yellowbelly can not be het for highway unless it is the visual highway. they are not recessive. and honestly it has been so long since i worried about terminology that i can not remember if the gravel is codom or incomplete dom.

If it were codom that would mean it would have a super correct? So if you take a gravel x gravel would you get a highway? Or is it just yb x gravel?

the super gravel is almost identical to the highway. i doubt many people could tell them apart if 3 or 4 were placed together.

no single gene gravels have been sold (on purpose anyway) to my knowledge. they are very, very similar to a yellowbelly in appearance. bolder belly markings without as much flaming.