Standard genes for punnet squares?

Does anyone have a list of standardized lettering used for all the different morphs in punnet squares?

I am not sure there is an official list per say. In that I mean I don't think it has been studied scientically for someone to say this is how they must be written.

Here are some of the common ways I have seen it written - but if this is for your use then you could use whatever "codes" you wanted to.

NN = Normal wild type
aa = Albino (so Na = Het albino)
CCgg = Orange Ghost
ccGG = Carmel
Np* = Pastel (*= codom)
Nm* = mojave

The below I haven't seen anyone really use but they would make sense to me based on the above ones.

Nl* = lesser
Nc* = cinny

Hope this helps,
Sean

There is no standard for each morph, although that isn't true of every field of study. Sometimes you'll see a plus sign indicate wild type alleles. So aa is an Albino a+a is a het Albino and a+a+ is a wild-type (normal).

BP's tend to use the standard notation, which is "use whatever you feel like it, as long as you describe what it means". Outside of Bp's I've never seen the use of the asterisk to indicate codominance. I'm not all that fond of it (because the results are going to be the same whether it's codominant or recessive). But as long as your method doesn't cause confusion, do it how you like it ;).