Some one please correct me if I'm wrong here, but this is how it I understood it to work.
Jellies are an example of incomplete dominance.
Jelly x ANYTHING = 1/2 your clutch being het PB and 1/2 being het amel because PB, T-neg, and jelly all share the same locus on the chromosome and all three traits are allelic with each other.
Jelly x normal = 50%/50% hets
Jelly x morph = 50% jelly, 50% double hets
Jelly x 2x morph = 50/50 3x hets
Jelly x 3x morph = 50/50 4x hets
PB to T-neg = all Jellies
Jelly to jelly = Jellies, PB and T-negs
Jelly to PB = PB and Jellies
Jelly to T-neg = Jellies and T-negs
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