The Arabesque mutation results in the thinning of saddles which connect forming lateral stripes running down either side of the boa constrictor, a beige body coloration, and a dark tail with reduced patterns. This mutation is an incomplete-dominant originating from South American boas.
The homologous form of the mutation is expressed when the boa has two homologous alleles of the mutated gene, this is referred to as the “super” form. When the animal is heterozygous meaning it carries one mutated allele and one normal allele then a completely different phenotype is expressed.
The heterozygote will express proteins for each allele and can be considered an intermediate phenotype between wild and “super arabesque”. Heterozygous arabesque boas display thinly connected saddle patterns similar to what is seen in the square tail mutation, they also have black flecking throughout their entire body.