Turnaround time
10 workdays
48.4
40
Genetic test for the TFEC-related piebald variant in ball pythons.

Overview
This genetic test determines whether a ball python (Python regius) carries the tested TFEC variant associated with the piebald phenotype. This phenotype is characterized by clearly visible areas of unpigmented or lighter-colored skin, interrupting parts of the normal color and pattern. The extent of these lighter areas can vary from small white patches to larger, more striking sections of the body.
The piebald trait is generally inherited in an autosomal recessive manner. This means that an animal usually needs to inherit two copies of the tested variant to develop the typical piebald appearance. Animals with only one copy are generally carriers: they usually do not show the phenotype themselves, but they can pass the variant on to their offspring. As a result, appearance alone is not always enough to determine with certainty whether an animal is genetically clear or a carrier of the tested variant.
This analysis can determine whether the tested animal is clear, a carrier, or positive for the tested variant. A clear result indicates that the tested variant was not detected. A carrier result means that one copy of the variant is present. A positive result means that two copies of the tested variant were identified, which is consistent with the genetic profile associated with the piebald phenotype.
This information is particularly valuable for breeders and owners who want greater certainty about the genetic background of their animal. The test supports well-informed breeding decisions, helps estimate the expected outcomes of pairings more accurately, and makes it possible to identify hidden carrier status. This is especially relevant for recessive traits, because animals without a visibly unusual pattern may still be genetically important within a breeding program.
In addition, the result helps interpret the observed appearance more accurately. Not every unusual or striking color pattern arises from the same genetic cause. By testing specifically for this variant, you gain clearer insight into the presence of a specific genetic factor associated with piebald. This makes interpretation more precise than relying on phenotype alone.
For customers working specifically on pairings, line development, or confirmation of genetic status, this analysis therefore offers clear practical value. You receive an objective genetic result that can contribute to greater certainty, better planning, and a more informed interpretation of the animal and its potential offspring.
As with any DNA analysis, this test relates to the specific variant being examined. The result should therefore always be interpreted in the context of the tested genetic change and the available knowledge about this trait. Within that context, this test is a targeted tool for assessing genetic status for piebald more accurately.
Included subanalyses
This analysis includes the following subanalysis:
Phenotypes
Allele combinations & result interpretations
Below, for each tested locus, you will find the possible allele combinations that may be reported within this analysis, together with a brief explanation of their genetic meaning. The interpretation of possible interactions between different loci is included in the report, but is not shown here in full because that would lead to too many combinations on this page. The final expression may also depend on other genes and their interaction.
Genotype / allele combination: CC (wildtype)
This animal does not carry the tested piebald-associated TFEC variant. It will not pass on the tested variant. Other genes can still influence colour and pattern.
Genotype / allele combination: CT (heterozygote, carrier)
This animal carries one copy of the tested piebald-associated TFEC variant. It can pass the variant to offspring. The eventual phenotype depends on the full genotype and the wider genetic context.
Genotype / allele combination: TT (homozygote)
This animal has the tested piebald-associated TFEC genotype. It will pass the tested variant to offspring. Visible patterning can still vary and may be modified by other genes.
Sampling and submission guidelines






References