Understanding the platty gene?

[abi21491]

I getting closer to a complete understanding.

But if you breed a mojave/lesser BEL to a normal, there is a chance of getting a BEL.

But the platty(lesser with hidden platty gene) by normal, you can't get a platty.
Any explanation for this?

Nope, no chance of getting a BEL from BEL x Normal. You will only get Mojaves & Lessers in that pairing.