The Square Tail mutation results in the thinning of the boa’s saddles which connect laterally forming thin lines down either side of the animal. The space between the saddles forming squares. This mutation is autosomal recessive and originates from the Kubsch pastel boa line.
Since they also have the Kubsch pastel mutation they have crimson red tails, beautiful brown and orange saddles, and light-deep orange body coloration.
In order to express this mutation, a boa must have two homologous alleles of the mutated gene. If a boa only has one mutated allele and one normal allele then the animal is heterozygous and the phenotype will be that of a wild boa.