How can there be a het leather?

After looking at the link I posted please explan to me how that is possible

jmp745-
The limited research that I've done on dominant genes has yielded that a dominant to dominant gene pairing will produce animals all showing the dominant trait. Attached is a picture of a punnett square showing this cross (picture taken from the website of New England Reptile Distributors). If you find other info contrary to this, please let me know.

I'm curious, Ed- who else has consistently produced recessive leathers?

You may be right Dillon. I dont really know.

actually on http://www.worldofballpythons.com genetic wizard if you put spider to spider you get 75% spider and 25% regular. So I might be right. We dont really have simple dominant traits for beardies, so maybe some snake guys could shed some light on what happens if there is no super dunner.

That is very interesting- now that you mention it, I do remember listening to an interview with Brian Barcyk where he discussed all dominant traits really being co-dominant. Instead of there being a "super" form that was phenotypically different, it appeared the same as any other dominant form, but produced as a "super" form would. For example- breeding two dunners together. 25% normal scaled, 50% dunner, and 25% "super" dunner. The "super" dunners would produce as a silkback would compared to a leatherback. So when breeding the "super" dunner to a normal-scaled animal you would get 100% dunners instead of only 50%. You would have to hold back a large amount of the clutch to prove it out, but it's definitely an interesting thought.