HAHAHA not enough data? The morph has been around for at least 13 years. It was first reproduced in 2003. That's now 12 or more years of breeding.
The Banana/CG gene appears to have a recessive Z-linked meiotic drive that causes males bearing a sex-ratio Z chromosome to produce progenies with a large excess of males or females depending on if they are heterozygous or homozygous for the trait. This genetic defect is attached to the banana/cg phenome so it only affects progeny bearing the visual phenotypic traits of the banana/cg and the normal offspring are unaffected. This has actually been witnessed in a few other animals. What makes this different is the extensive variation of genetic defects in ball pythons, which is what makes the ball pythons so awesome. Every mutation is incredible and unique.
but then what do I know.