Ball Python morph
Ball Python (Python regius)
Visual Jolliff Axanthic. Homozygous at Jolliff axanthic locus. Grayscale coloration.
Reduces yellow/red pigment. Jolliff line established in 1997. Less commonly worked with than VPI and TSK lines but confirmed as an independent locus through complementation testing with other axanthic lines.
How to identify it: Grayscale appearance similar to other axanthic lines. Distinguishing between axanthic lines visually is unreliable; lineage tracking is essential.
Jolliff Axanthic follows a recessive inheritance pattern, carried on the Axanthic (Jolliff Line) allele (locus AxJolliff).
Because Jolliff Axanthic is recessive, an animal needs two copies of the allele to show the trait visually. An animal with a single copy is called het jolliff axanthic (heterozygous). A het animal looks normal but carries the gene, so pairing two het jolliff axanthic animals produces, on average, one in four visual jolliff axanthic offspring.
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