The Empty Back (EB) phenotype has generated considerable interest recently. Following our Kaleidoscope community chat, we'd like to discuss observed results related to EB, and highlight key considerations for the future.
Consistent observations reveal a correlation between EB presence and reduced harlequin patterning. While heterozygous EB individuals often exhibit moderate pattern expression, homozygous EB individuals have, thus far, shown minimal harlequin coloration (orange/white pattern). Additionally, a strong association exists between EB expression and pinstripe presence. It remains unclear whether EB's expression is contingent on pinstripes or if it manifests independently.
The EB phenotype was documented as early as 2007, initially labeled simply as "pinstripe," as evidenced by the forum archive post to the right. In today's hobby, perhaps the most visually striking EB presentations feature prominent pinstripes without tigering.
It is the author's view that it is important to consider that EB may represent a pattern variant rather than a distinct gene that suppresses other patterns. In simpler terms this consideration can be stated as;
"Is EB suppressing pattern...or is the EB pattern selected for?"
While attributing traits to single genes is a common simplification, a thorough understanding of the polygenic relationships governing crested gecko traits necessitates patience, open-mindedness, and collaborative community engagement.
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