There is a Stripe mutation that is recessive. Peter Kahl's Stripe boas.

There isn't a definite reverse stripe mutation, however some of the Jaguar boas that Frank Martin is working with produce some reverse stripes. This mutation is either dominant or co-dominant. A Super form has not been isolated yet, so right now it is Dominant. The same goes for Arabesques and Aztecs they may end up being Co-dominant mutations after all.

Stripes and reverse stripes also occur at random or are caused by environmental factors such as fluctuation in temperatures when a female is gravid.

Jungles, and Hypos can throw Striped and Reverse striped babies.
The Harlequin bloodline has done so as well.

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